
Kate, Duchess of Cambridge, stared lovingly into her newborn son's eyes as she carried the little prince out of hospital and home to Kensington Palace.

Delighted father Prince William revealed how Princess Charlotte and Prince George are 'delighted' at the arrival of their little brother who was born at 11.01am as he gave his first royal wave to an adoring public.

William joked that he didn't keep world waiting for too long after she went into labour at around 6am before giving birth five hours later.

He said of the name of the new baby, who is now fifth in line to the throne: ‘You’ll find out soon!' He also joked that he and Kate would have 'Thrice worry now!'

The beaming parents looked delighted as they showed off their third son to the world who was born weighing 8lbs 7oz on St George's Day.

Towards the end of the Royal baby's first outing, the Duchess of Cambridge murmured to Prince William that she was worried about the baby getting cold before they headed back inside.

His older siblings, Prince George and Princess Charlotte, were taken to meet him in their school uniform nearly six hours after Kate gave birth, but were not present as their parents emerged from the Lindo Wing.

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The Duchess of Cambridge gave birth to her new son at 11.01am after going into birth around 6am, to which Prince William joked: 'We didn’t keep you waiting too long this time'

The Duchess of Cambridge and Prince William emerged from the Lindo Wing with their new son

The beaming parents looked delighted as they showed off their new son to the world who was born weighing 8lbs 7oz on St George's Day

Holding the baby close, the Duchess of Cambridge looked the picture of love

Towards the end of the Royal baby's first outing, the Duchess of Cambridge murmured to Prince William that she was worried about the baby getting cold before they headed back inside

Prince William joked with photographers that there would be 'thrice worry now!' after the birth of his third child

The doting father kept a hand on his wife's back as she walked down the stairs

Kate looked effortless though as she beamed at her husband while she walked the stairs in heels with the baby in her arms

The baby's delicate knit blanket matched his knit hat

Kensington Palace said the baby was born at 11am, after Kate was taken by car to the Lindo Wing just before 6am.

The Duchess of Cambridge will be leaving St Mary's Hospital this evening, the palace said, adding that George and Charlotte have returned to Kensington Palace after meeting their new brother.

Prince William unbuckled George from his car outside the Lindo Wing of St Mary's Hospital in Paddington, London, before he got out in his school uniform, then took Charlotte out of the car and she shyly waved to the cameras.

The new prince was born at 11.01am weighing 8lbs 7oz and is now fifth in line to the throne

Before emerging from the Lindo Wing the pair looked nervous, but they were soon waving and smiling for the crowds

The Duchess of Cambridge and Prince William emerged from the Lindo Wing to show off their new son to the world

The new baby even made an attempt at his first royal wave. The proud parents looked ecstatic with their new bundle of joy

Both his wrinkly little hands peeked out from inside his white blanket

Prince William and the Duchess of Cambridge posed outside the Lindo Wing with Prince George on July 23, 2013 (left), Princess Charlotte on May 2, 2015 (centre) and the new Prince earlier (right)

Photographers and Royal fans have gathered outside the Lindo Wing all week in anticipation of the new baby

The new Prince's shawl The new Prince's shawl is from GH Hurt and Son Ltd. A Kensington Palace spokesperson said: 'The company has a long-standing connection with The Royal Family. 'Other members of The Royal Family have been presented with these shawls in the past and The Duke of Cambridge, Prince George and Princess Charlotte had similar shawls when they were babies.' Advertisement

He then led them to meet their new brother, who is the Queen and the Duke of Edinburgh's sixth great-grandchild. Bookmakers have reported a surge in bets on the name Arthur for the royal baby, who is fifth in line to the throne.

Earlier, Prince William appeared outside the hospital this afternoon, telling reporters: 'I'll be back in a minute.'

William was present for the birth this morning, and both Kate and the child were 'doing well', according to a palace spokesman. Senior members of the royal family were all said to be 'delighted with the news'.

Kensington Palace said: 'Her Royal Highness The Duchess of Cambridge will be leaving St. Mary's Hospital this evening. The Duke and Duchess of Cambridge and their son will travel home to Kensington Palace.'

A statement added: 'Prince George and Princess Charlotte have now returned to Kensington Palace. Their Royal Highnesses would like to thank all staff at the hospital for the care and treatment they have received.'

Prince William joked with waiting press, saying: ‘Thrice worry now!'

The beaming parents smiled and waved to adoring crowds, many of whom had waited outside the Lindo Wing for days

Kate looked joyful as she waved to crowds outside the Lindo Wing of St Mary's Hospital in Paddington, London,

The new baby boy is the fifth in line to the throne and was born weighing 8lbs 7oz

Prince William and Kate have now driven home from hospital with their third child

Princess Charlotte looked just like her mother earlier as they were both spotted waving on the steps of the Lindo Wing

At one point William kept waving to the media as Kate checked on the tot

Royal watchers had been expecting a swift delivery at the Lindo Wing, with the child sharing a birthday with William Shakespeare and Lady Gabriella Windsor, the daughter of Prince and Princess Michael of Kent.

Sources told the Mail that George was at his school, Thomas's Battersea, and was not taken out early. His sister Charlotte attends Willcocks Nursery in Kensington.

No other royal visitors are expected at the Lindo Wing. It is anticipated that the rest of the family, including the proud grandparents, will meet their grandson at Kensington Palace tomorrow.

Prince William joked that there would be 'thrice worry now!' after the new arrival

Kate was seen waving to adoring crowds before driving home from hospital with her third baby. Prince William and Kate looked delighted outside the Lindo Wing as they presented him to the world

The baby boy has now been driven away from the hospital

Kate shared a loving look with her husband William as they emerged from the Lindo Wing for the ride home

The pair held hands as they prepared to drive the baby home from the hospital

The new prince slept through the whole thing

He rode in the backseat with his mother with William behind the wheel

The beaming parents shared their new son with the world earlier after Kate gave birth at 11.01am

The official Kensington Palace Twitter account shared a photo of the proud parents with the new prince with the caption 'Welcome to the family'

Hundreds of people have been waiting outside the Lindo Wing all week in the run-up to Kate's due date

The self-proclaimed Royalist Town Crier announced the birth on the steps of the Lindo Wing, marking the moment by saying 'God save the Queen'. He drew cheers from the crowd of royal watchers outside the hospital.

An easel with a bulletin announcing the royal birth was put on display outside Buckingham Palace in London by footman Heather McDonald and and senior footman Olivia Smith.

The notice reads: 'Hey Royal Highness the Duchess of Cambridge was safely delivered of a son at 11.01am. Hey Royal Highness and her child are both doing well.'

Hundreds of well-wishers and photographers lined the streets outside the Lindo Wing, hoping to get a snap of the new baby

They were happy to stand and wave for the crowds until Kate grew worried about how cold her new son may be and headed back into the Lindo Wing

Prince William and the Duchess of Cambridge looked nervous before the emerged with their new son

The prince eschewed British tailoring for the big day in favor of a blue blazer by Polo

Prince William returns to the Lindo Wing with Prince George and Princess Charlotte as they go to meet their brother

Prince William took George and Charlotte out of his car before the Princess shyly waved to the cameras (right)

William arrives at the Lindo Wing of St Mary's Hospital this afternoon with his children Prince George and Princess Charlotte

Princess Charlotte waved as she was taken into the Lindo Wing with her father, Prince William, and brother, Prince George

The youngsters were taken to the Lindo Wing to meet the newborn Prince of Cambridge by their father Prince William

Prince George and Princess Charlotte were led into the building in Paddington hand-in-hand with the Duke of Cambridge

Charlotte appeared to enjoy the moment, waving to the photographers and cameraman outside the maternity unit

It will remain in place for around 24 hours. The practice of posting a bulletin announcing a royal birth has gone on for at least as long as Buckingham Palace has been the Sovereign's official residence - since 1837.

New prince is heaviest born in more than 100 years The new Prince of Cambridge is the heaviest baby born to an heir in more than 100 years at 8lb 7oz - and is heavier than both his siblings. Charlotte, at 8lb 3oz, weighed slightly less than George's 8lb 6oz - but was still above average. The average weight of a baby in the UK is around 7lb 7oz (3.5 kg). Although the heaviest born to an heir, the new prince is not the heaviest royal baby in recent years. That title falls to Savannah Phillips - the daughter of the Queen's grandson Peter Phillips - who weighed 8lb 8oz in 2010. Prince William weighed 7lb 1.5oz in 1982, while Prince Charles weighed 7lb 6oz in 1948. Prince Harry weighed 6lb 14oz in 1984. Advertisement

After it comes down, the notice will be sent to the Privy Council Office so it can be kept in their records.

A palace spokesman said: 'Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 11.01am. The baby weighs 8lbs 7oz. The Duke of Cambridge was present for the birth.

'Her Royal Highness and her child are both doing well. The Queen, The Duke of Edinburgh, The Prince of Wales, The Duchess of Cornwall, Prince Harry and members of both families have been informed and are delighted with the news.'

The baby's sex was a surprise to William and Kate, who chose not to find out what they were having. The baby's title is His Royal Highness and he is a Prince of Cambridge.

Kensington Palace said the name of the baby would be announced in due course, and a formal notice of the birth would be posted on the forecourt of Buckingham Palace.

Celebrities and politicians have been sending their best wishes to The Duke and Duchess of Cambridge on social media.

Prime Minister Theresa May sent her 'warmest congratulations to the Duke and Duchess of Cambridge on the birth of their baby boy.'

'I wish them great happiness for the future,' she added.

The Duke of Cambridge appears this afternoon outside the Lindo Wing at St Mary's Hospital in Paddington, London

William is expected to return to the hospital with his other children. He did the same when Charlotte was born, bringing Prince George to see his new sister before leaving with wife and baby shortly afterwards

The Duchess of Cambridge will be leaving St Mary's Hospital this evening, the palace said, adding that George and Charlotte have returned to Kensington Palace after meeting their new brother

Princess Diana's brother Charles tweeted the caption 'very sweet!' alongside photos of Prince George and Princess Charlotte visiting St Mary's to meet their new sibling

Royal fans celebrate this afternoon outside the Lindo Wing at St Mary's Hospital in Paddington, London

Easel at Buckingham Palace announces birth of Kate's third baby An easel was put on display outside Buckingham Palace this afternoon by footman Heather McDonald and senior footman Olivia Smith. The notice announcing the royal birth reads: 'Her Royal Highness the Duchess of Cambridge was safely delivered of a son at 11.01am today. 'Her Royal Highness and her child are both doing well.' The easel was put on display at 2.30pm. The practice of posting a bulletin announcing a royal birth has gone on for at least as long as Buckingham Palace has been the Sovereign's official residence - since 1837. Advertisement

Princess Diana's brother Charles Spencer joined well-wishers by tweeting 'Very sweet!' alongside the photos of Prince George and Princess Charlotte going into the Lindo Wing to visit their new baby brother.

Mayor of London Sadiq Khan tweeted: 'On behalf of Londoners, I want to send our warmest congratulations to the Duke & Duchess of Cambridge on the birth of their baby boy.'

Foreign Secretary Boris Johnson and Shadow Home Secretary Diane Abbott also sent their congratulations as politicians from across the political spectrum reacted with joy to the news of a new royal baby.

Mr Johnson offered his 'huge congratulations to Their Royal Highnesses The Duke and Duchess of Cambridge on the safe delivery of their baby boy!'

Former world heavyweight champion boxer, Frank Bruno MBE, and actress Mia Farrow were among the celebrity well wishers on social media, while comedian David Walliams quipped: 'Prince Harry just got demoted again.'

The Archbishop of Canterbury and leader of the Liberal Democrats have also congratulated the royal family on social media.

Archbishop Justin Welby wrote: 'Congratulations to The Duke and Duchess of Cambridge on the safe delivery of their baby, a brother for Prince George and Princess Charlotte. May God bless them and all of their children with love, happiness and health.'

Sir Vince Cable, leader of the Lib Dems, tweeted: 'Congratulations to the Duke and Duchess of Cambridge on the birth of their son. I'm sure his older brother will be delighted he has been born on St George's Day! Best wishes to them all and Princess Charlotte.'

Speaker John Bercow told the Commons: 'I am sure the whole House would want to join me in sending Their Royal Highnesses, the Duke and Duchess of Cambridge, our warmest congratulations on the birth of their son.'

Defence Secretary Gavin Williamson added: 'I'd very much like to associate the Government with your comments and warm wishes.'

Both Tower Bridge and the Golden Jubilee Bridge over the River Thames have been lit up blue in support of the Duke and Duchess of Cambridge after the birth of their baby boy this morning.

The BT Tower also joined in with festivities, and was lit up with a sign announcing 'it's a boy!'

A notice is placed on an easel in the forecourt of Buckingham Palace to formally announce the birth of the baby boy

A town crier stands outside the Lindo Wing of St Mary's Hospital in Paddington after the birth was announced

Royal fans at Buckingham Palace gather for a glimpse of the easel announcing the birth of the royal baby

Fast labour for Duchess of Cambridge's third baby The Duchess of Cambridge's third labour had been expected to be fast - if not faster - than before. Although it varies from woman to woman, some mothers report a speedier delivery third time around. For first-time mothers, active labour may take around eight hours and in a second labour around five hours, according to Babycentre.co.uk. When Kate gave birth for a second time, she delivered Princess Charlotte just two hours and 34 minutes after being admitted to hospital. With Prince George in 2013, the duchess went into hospital at around 6am and her son arrived 10-and-a-half hours later at 4.24pm. Clare Livingstone, professional policy adviser at the Royal College of Midwives, said: 'It will vary from one woman to another. Some women report a quicker labour with their third baby but not everyone. It seems to be though that they do go more quickly. It's a very individual thing.' Advertisement

David Janzen, visiting the UK from Edmonton, Canada, was among those who gathered outside Buckingham Palace this afternoon.

'I was watching the news earlier and saw the announcement, so my wife and I decided to come down to Buckingham Palace and see it all happen,' said the 62-year-old.

Alain Ritzenthaler, from France, said the announcement was very different to his home country. 'We don't have a royal family like this, so it's exciting to see,' he said.

Natasha Wilburn did not know about the royal birth until she was stood outside the palace. 'I had no idea it was happening today,' said the 30-year-old from the US.

The senior medical team that looked after Kate during her labour were named by Kensington Palace, with Guy Thorpe-Beeston, surgeon gynaecologist to the royal household, and consultant gynaecologist Alan Farthing, surgeon gynaecologist to the Queen, joined by two familiar colleagues.

Dr Sunit Godambe, a consultant neonatologist at Imperial College NHS Trust, which runs St Mary's hospital, was part of the group that cared for the duchess during her previous two births alongside Mr Farthing and Mr Thorpe-Beeston.

Professor Huw Thomas, physician to the Queen and head of the medical household, completed the team. He was also involved with the birth of Princess Charlotte.

Earlier, excitement was building outside St Mary's Hospital, where some fans had been camped out for 15 days hoping for a glimpse of the royal baby.

An unsuspecting couple emerged from the Lindo Wing with their newborn baby to be greeted by the world's media. They posed for photographs outside the famous door in front of dozens of journalists and photographers before leaving in a taxi

Members of the media gather outside the Lindo Wing after Kensington Palace announced Kate had gone into labour

Prince Harry and his fiancee Meghan Markle arrive at a service at St Martin-in-The Fields church in London this afternoon

Well wishes hold flags outside the Lindo Wing this morning as they await news of the new royal baby

How St George's Day and YouTube's birth are marked on April 23 The royal baby has been born on patriotic St George's Day, which celebrates the patron saint of England. April 23 is also the day Edward III founded the Order of the Garter, the senior order of chivalry in England, in 1348. The royal baby also shares his birthday with Lady Gabriella Windsor - the daughter of Prince and Princess Michael of Kent, who was also born at the Lindo Wing on April 23 in 1981. Famous names celebrating their birthdays on Monday include actors Lee Majors, James Russo, John Hannah and Dev Patel; actress Judy Davis, singer Taio Cruz, and Gigi Hadid. Here are some other historic events which took place on April 23: 1564: William Shakespeare, English playwright, poet and actor, was born in Stratford-upon-Avon. He died on the same date in 1616.

1661: Charles II of England, Scotland and Ireland was crowned king at Westminster Abbey.

1775: Joseph Mallord William Turner, English landscape painter, was born in London.

1968: The first decimal coins appeared in Britain. They were the 5p and 10p pieces which replaced the old one shilling and two shilling coins.

1983: Cliff Thorburn scored the first televised maximum break of 147 in the World Snooker championships, at the Crucible Theatre, Sheffield.

2005: The first video was uploaded to YouTube.com. Advertisement

The timing of the announcement that Kate had gone into labour, falling on St George's Day, added to the occasion for waiting royalists outside.

John Loughrey, 63, who is part of a group who have been camped outside the hospital, said: 'We are so pleased. We have been here for 15 days.

'I'm so pleased it's St George's Day. St George himself would be very pleased if the baby's born today.'

Mr Loughrey, from Streatham, South London, said he plans to celebrate the birth with English flags and a portion of fish and chips.

'It doesn't matter if it's a boy or a girl as long as it's a healthy baby and a healthy mother,' he said. 'It's very good for our country and of course Her Majesty the Queen.'

Another member of his group, 82-year-old Terry Hutt, also welcomed the news.

'It's fantastic to have another newborn baby,' said Mr Hutt, who turns 83 at the end of the month and was hoping to share his birthday with the new royal.

'If they were born on my birthday, I would have got a birthday cake.'

Maria Scott, 46, from Newcastle, added: 'I think it's going to be a boy and I think it's going to be quick.'

The group were talking in front of their make-shift camp, including royal memorabilia and a Union Flag tent.

The Duchess is being cared for by consultant obstetrician Guy Thorpe-Beeston, who is the surgeon-gynaecologist to the household, and consultant gynaecologist Alan Farthing, the Queen's surgeon-gynaecologist - part of the trusted team who delivered George and Charlotte.

Highly-trained midwives were also on hand, while experts were waiting in the wings in case of an emergency.

For her previous births, Kate had a 23-strong team of top medics working or on stand-by from Imperial College Healthcare NHS Trust - which runs St Mary's Hospital.

Theatre staff were ready, along with a lab technician, replacement anaesthetists and paediatricians, a back-up for the consultant, and workers from a special baby care unit.

The official announcements that Kate had gone into labour - and given birth - were released by Kensington Palace

The Duchess of Cambridge gave birth to Princess Charlotte, who weighed 8lbs 3oz, in the same hospital on May 2, 2015

Prince George, who was born weighing 8lbs 6oz, was also introduced to the world in the same manner on July 23, 2013

Tower Bridge in London has been illuminated in blue in support for the Duke and Duchess of Cambridge as they welcome their new baby boy

The BT Tower in Fitzrovia, London, also joined in with festivities with a sign announcing 'it's a boy!'

The iconic landmark in the capital was lit up this evening after Kate gave birth to a healthy baby boy earlier

The Golden Jubilee Bridge over the River Thames has also been lit up blue for the occasion

With George, the duchess gave birth 10-and-a-half hours after being admitted to hospital, but Charlotte was born just two hours and 34 minutes after Kate arrived at the Lindo Wing.

Will the new Prince be named after mythical King Arthur? The baby son of the Duke and Duchess of Cambridge could be named after the mythical King Arthur - if punters are to believed. Bookmakers have seen a flurry of bets placed on William and Kate's infant boy being given the moniker of the famous leader of the Knights of the Round Table. William Hill's Rupert Adams said they had a very busy day with bets totally almost £100,000 placed by punters, with the 2-1 favourite Arthur and second place James 4-1, best backed. Harry Aitkenhead from Coral said: 'At the moment Arthur is now 7-4 with Coral. James 4-1 with Philip and Albert at 6-1 the only other two with single figure odds. 'Anything else would be a big surprise.' The moniker has a strong royal pedigree as it is one of the middle names of both Charles and William. Arthur supposedly lived in the 5th or 6th century and is said to have unified the country and set up his court at Camelot before being killed in a final epic battle. Once popular, the name fell out of fashion but has had a revival in recent years. Former prime minister David Cameron has a son called Arthur. Advertisement

The birth was declared in both conventional and contemporary ways.

An announcement was emailed to the press and a celebratory tweet posted on the Kensington Palace Twitter feed - @KensingtonRoyal.

There is also the traditional custom of placing a framed paper proclamation on an ornate gold stand behind the iron railings of Buckingham Palace.

Just like with her first and second children, Kate had been hoping for a natural birth and did not know whether she was having a boy or a girl.

Bookmakers were also waiting to see whether they have to pay out on the name, delivery date, hair colour and weight of the baby.

Predicted names include Alice, Alexandra, Elizabeth, Mary and Victoria for a girl and Arthur, Albert, Frederick, James and Philip for a boy.

George and Charlotte visited the hospital to see their mother and baby sibling, just as George did when his younger sister was born three years ago.

While Kate was in labour, George and Charlotte were likely to be cared for by their full-time, live-in nanny, Maria Teresa Turrion Borrallo.

The duchess's pregnancy was announced by Kensington Palace on September 4 last year.

Kate again suffered from extreme pregnancy sickness hyperemesis gravidarum.

She went on maternity leave on March 22, but the duchess - and her large bump - attended an Easter Sunday church service in Windsor with the royals on April 1.

She has joked that William is 'in denial' about having a third child.

Although the Queen has four children, the duke is the first future king to have a third for more than 120 years.

In 1897, George V, then the Duke of York, welcomed a daughter - Princess Mary - the younger sister of Edward VIII and George VI.

Unlike William, George V never expected to be king and only became heir to throne when his older brother, the Duke of Clarence and Avondale, died from flu in 1892.

Meet the team who helped Kate give birth: 20 medical experts led by Royal Household's surgeon-gynaecologist and Jill Dando's former fiance

The Duchess of Cambridge is in familiar hands as she delivers her third child.

Consultant obstetrician Guy Thorpe-Beeston and consultant gynaecologist Alan Farthing are the two senior royal doctors overseeing the birth.

Both were called in for the arrival of Prince George in 2013 and Princess Charlotte in 2015.

Consultant obstetrician Guy Thorpe-Beeston (left) and consultant gynaecologist Alan Farthing (right) are the two senior royal doctors overseeing the birth

Mr Farthing, the Queen's surgeon-gynaecologist, was engaged to BBC presenter Jill Dando when she was shot dead in April 1999.

He was a pioneer in keyhole surgery and specialises in using the technique to treat gynaecological cancer patients.

Mr Thorpe-Beeston, surgeon-gynaecologist to the Royal Household, delivered Charlotte in 2015.

He has a Harley Street practice, and is a consultant at the Portland private hospital and at the Chelsea and Westminster Hospital for the NHS.

Mr Farthing was engaged to BBC presenter Jill Dando when she was shot dead in April 1999

A Cambridge graduate, he specialised in foetal medicine at King's College Hospital, and is an expert in high-risk pregnancies and recurrent miscarriage.

Sir Marcus Setchell, who was the Queen's surgeon-gynaecologist and who delivered Prince George, has since retired.

Midwives will also be attending to Kate at the exclusive Lindo Wing of St Mary's Hospital in Paddington, central London.

But a team of more than 20 top medical experts will also be on standby in case of an emergency.

Theatre staff will be waiting in the wings, along with a lab technician, replacement anaesthetists and paediatricians, a back-up for the consultant, and workers from a special baby care unit.

Royal Navy make a splash with their tribute to royal baby while David Walliams jokes 'Prince Harry just got demoted again!'

The Royal Navy has kicked off royal baby celebrations as sailors and marines spelled out the word 'boy' on the deck of HMS Albion.

Servicemen and women aboard the vessel, which is currently on duty in the Asia Pacific region, congratulated the Duke and Duchess of Cambridge in unique fashion.

Meanwhile, celebrities and politicians have been sending their best wishes to The Duke and Duchess of Cambridge on social media.

Prime Minister Theresa May sent her 'warmest congratulations to the Duke and Duchess of Cambridge on the birth of their baby boy'.

The Royal Navy has kicked off royal baby celebrations as sa.ilors and marines spelled out the word 'boy' on the deck of HMS Albion

Prime Minister Theresa May sent her 'warmest congratulations to the Duke and Duchess of Cambridge on the birth of their baby boy', as did Sadiq Khan and David Walliams

'I wish them great happiness for the future,' she added.

Mayor of London Sadiq Khan tweeted: 'On behalf of Londoners, I want to send our warmest congratulations to the Duke & Duchess of Cambridge on the birth of their baby boy.'

Brandon Lewis, chair of the conservative Party, also tweeted his 'huge congratulations to the Duke and Duchess of Cambridge.'

Shadow education secretary Angela Rayner also tweeted her 'congratulations to William & Kate on the birth of their baby boy.'

Labour leader Jeremy Corbyn said: 'Congratulations to Kate and William on the birth of their baby boy.

'I wish them all the very best.'

Former world heavyweight champion boxer, Frank Bruno MBE, and Hollywood actress Mia Farrow were among the celebrity well wishers on social media.

Meanwhile, comedian David Walliams quipped: 'Prince Harry just got demoted again.'

The BT Tower (pictured) announces to the British public the birth of a royal baby boy

The Archbishop of Canterbury and leader of the Liberal Democrats have congratulated the royal family on social media

The Duchess of Cambridge gave birth to her third child - a boy weighing 8lbs 7oz, on what is St George's Day.

Kensington Palace announced the baby was born at about 11am, after Kate was taken by car before 6am to the Lindo wing of St Mary's Hospital in Paddington, London.

The birth appears to have taken place without complications. The baby is fifth in line to the throne and the Queen and the Duke of Edinburgh's sixth great-grandchild.

The Archbishop of Canterbury and leader of the Liberal Democrats have congratulated the royal family on social media.

Archbishop Justin Welby wrote: 'Congratulations to The Duke and Duchess of Cambridge on the safe delivery of their baby, a brother for Prince George and Princess Charlotte.

Speaker John Bercow told the Commons: 'I am sure the whole House would want to join me in sending Their Royal Highnesses, the Duke and Duchess of Cambridge, our warmest congratulations on the birth of their son.'

Servicemen and women aboard HMS Albion, which is currently on duty in the Asia Pacific region, congratulated the Duke and Duchess of Cambridge in unique fashion

Defence Secretary Gavin Williamson added: 'I'd very much like to associate the Government with your comments and warm wishes.'

'May God bless them and all of their children with love, happiness and health.'

Sir Vince Cable, leader of the Lib Dems, tweeted: 'Congratulations to the Duke and Duchess of Cambridge on the birth of their son.

'I'm sure his older brother will be delighted he has been born on St George's Day! Best wishes to them all and Princess Charlotte.'

Foreign Secretary Boris Johnson and Shadow Home Secretary Diane Abbott also sent their congratulations as politicians from across the political spectrum reacted with joy to the news of a new royal baby.

Mr Johnson offered his 'huge congratulations to Their Royal Highnesses The Duke and Duchess of Cambridge on the safe delivery of their baby boy!'

The Victoria and Albert Museum, of which the Duchess of Cambridge is a patron, also congratulated the couple

Mystery punter puts £5,000 on royal baby being named ARTHUR amid a flurry of recent bets for the traditional choice

Albert or Philip? Thomas or Henry? - the Duke and Duchess of Cambridge are likely to seek regal inspiration for their new arrival.

Royal Punters are already quids-in after correctly predicting the third royal baby would be a little Prince.

After opting for the traditional names George and Charlotte for their first two children, William and Kate are expected to keep it classic once again for baby number three.

King Arthur, as portrayed in the 2004 film by Clive Owen, was the mythical leader of the knights of the Round Table

One female customer asked to put some £5,000 on Arthur - currently leading as the favourite name - at a bookmakers in Cheltenham.

LATEST ODDS ON THE NAME OF KATE AND WILLIAM'S THIRD BABY Arthur 2/1 James 4/1 Albert 6/1 Philip 8/1 Alexander 10/1 Thomas 16/1 Frederick 25/1 Henry 25/1 Alfred 33/1 Charles 33/1 Edward 33/1 Jack 33/1 Louis 33/1 William 33/1 50/1 bar Odds supplied by Ladbrokes Advertisement

Others are hedging their bets on Albert, Frederick, James and Philip.

So what will the new prince be called? Here are some of the contenders:

Arthur

One of Charles's middle names, Arthur is also one of William's middle names and was a middle name of the Queen's father, George VI.

The legendary King Arthur was the mythical leader of the knights of the Round Table, who supposedly lived in the 5th or 6th century.

Once popular, the name fell out of fashion but has had a revival in recent years. Former prime minister David Cameron has a son called Arthur.

Albert

Queen Victoria used to insist that the name Albert was used as a middle name by her descendants, if not a first, in honour of her much-loved consort Prince Albert.

By choosing Albert or Bertie for a boy, William and Kate would be honouring Queen Elizabeth II's father, George VI, who was actually Albert Frederick Arthur George but always known to his family as Bertie.

Shy, stammering Bertie was forced to become king when his brother Edward VIII abdicated, but won the nation's affection by standing firm in London during the Second World War.

Philip

A lasting tribute to the Duke of Edinburgh might see a Prince of Cambridge called Philip.

Both Charles and William have Philip as a middle name.

The Duke - known for his dedication to duty and his acerbic wit - has been married to the Queen for more than 70 years and is the nation's longest serving consort.

Earlier, a bookmaker stands beside a blackboard with odds on baby names ahead of the birth of the child this morning

Frederick

A Prince Freddie of Cambridge would have a historical link to the 1st Duke of Cambridge.

Prince Adolphus Frederick lived from 1774 to 1850 and was a son of George III.

He was apparently very fond of interrupting church services by bellowing out 'By all means' if the priest said 'Let us pray'.

Charles

William may want to pay tribute to his father - but perhaps as a middle name as it may be considered to similar to Charlotte.

James

James could be chosen to signify Kate's affection for her brother, the baby's uncle, James Middleton.

William already has a cousin James, the Earl and Countess of Wessex's son, Viscount Severn.

James is a Stuart name. James I, son of Mary, Queen of Scots, had been king of Scotland for 36 years as James VI when he became king of England in 1603.

Other names

They could choose William as a middle name, but also perhaps Michael as a middle name out of respect for Kate's father.

Kate's grandfather on her paternal side was called Peter, while on her maternal side, her grandfather was Ronald.

Thomas also appears several times in Kate's family tree as does Francis.

How Charlotte, George and William are three of the cutest royal babies As the Duke and Duchess of Cambridge welcome their third child, here's a look at the some of the cutest royal babies through the ages. 1. Princess Charlotte Newborn Princess Charlotte enchanted royal watchers with her doll-like appearance as she made her debut on the steps of the Lindo wing in 2015. The Duke and Duchess of Cambridge released sweet photos of the baby princess being cuddled by her older brother Prince George. Princess Charlotte of Cambridge is carried outside the Lindo Wing in May 2015 2. Prince George Tiny George, wrapped snuggly in a white blanket, also won hearts when he was introduced to the world in 2013. His next public appearance showed how much he had grown, when the three-month-old was carried into his christening by his proud father William. Prince George is held outside the Lindo Wing front doors before leaving in July 2013 3. Prince William William was born in 1982, less than a year after the Prince and Princess of Wales wed. In a photoshoot when he was six-months-old, the young chubby-cheeked future king chuckled happily as he played with his parents at Kensington Palace. Blue-eyed William - in a white romper suit with blue embroidered detail - appeared transfixed as Diana waved a coloured toy above his head. William plays with his parents Princess Diana and Prince Charles in December 1982 4. Mia Tindall The daughter of the Queen's granddaughter Zara Tindall and former England rugby player Mike Tindall is often spotted at equestrian events with her parents. Mia became known for getting up to mischief on the sidelines as a toddler. Rugby player Mike Tindall holds his daughter Mia at an equestrian event in May 2016 5. Prince Andrew Andrew, now the Duke of York, was a happy youngster - and also one of the cutest royal babies. He was born in 1960 and is the second son and third child of the Queen and Duke of Edinburgh. He was the first child born to a reigning monarch for 103 years. Prince Andrew was the first child born to a reigning monarch for 103 years Advertisement

Traditional christening for royal baby whose father William will one day be Head of the Church of England

A traditional christening beckons for the Duke and Duchess of Cambridge's third child.

With father William - a future king - one day set to be Head of the Church of England, the royal baby must be welcomed into the Christian faith.

Prince George was baptised when he was three months old, while Princess Charlotte was only nine weeks.

The Duchess of Cambridge carries Princess Charlotte of Cambridge into the Church of St Mary Magdalene on the Sandringham Estate for the princess's christening in July 2015

Just like George and Charlotte, the new baby will wear a replica of the intricate frilly cream lace and satin robe made for Queen Victoria's eldest daughter in 1841.

The original is too delicate to be worn and a specially made exact copy is now used for royal baptisms.

George was christened by the Archbishop of Canterbury the Most Revd Justin Welby at St James's Palace's Chapel Royal in 2013.

He was on his best behaviour, blowing bubbles beforehand and being quiet and peaceful afterwards.

With a guest list of only 23 people, a number of senior royals were missing including the Princess Royal, the Duke of York and the Earl of Wessex.

Those at the private service included the Queen, the Duke of Edinburgh, the Prince of Wales, the Duchess of Cornwall, Prince Harry, the Middletons, plus George's godparents and their spouses and William's former nanny Jessie Webb, who had been helping to care for George.

Charlotte was christened at the Church of St Mary Magdalene in Sandringham in July 2015.

Charlotte was wheeled to her christening service in 2015 by Kate in a vintage traditional 1950s Millson pram previously used by the Queen for Prince Andrew and Prince Edward

She was wheeled to the service by Kate in a vintage traditional 1950s Millson pram previously used by the Queen for Prince Andrew and Prince Edward.

A royal baby's godparents are usually announced on the morning of the christening.

Kate and William previously opted for friends over dignitaries.

George's seven godparents include Diana, Princess of Wales's close friend Julia Samuel, William's cousin Zara Tindall and Kate's school friend Emilia Jardine-Paterson.

Charlotte has five godparents including William's childhood friend Thomas van Straubenzee, Kate's confidante Sophie Carter, and Diana's niece the Hon Laura Fellowes.

Prince Harry missed Charlotte's christening while in Africa, but this time will be expected to attend with new wife Meghan Markle, who he marries on May 19.

Kate battles against severe morning sickness to carry out royal duties Kate made her first public appearance almost five weeks after her pregnancy was announced, at Buckingham Palace Despite suffering from another bout of severe morning sickness, the Duchess of Cambridge has battled through to carry out a significant number of engagements while pregnant. Kate's pregnancy was announced on September 4 last year, after she was forced to cancel an appearance the same day due to the condition known as hyperemesis gravidarum. At the start of all three of her pregnancies, Kate has suffered from the same problem. Hyperemesis gravidarum, which causes severe vomiting, can lead to dehydration, weight loss and a build-up of toxins in the blood or urine called ketosis. But unlike her first pregnancy, when she was admitted to hospital and treated for a number of days, the duchess did not need that level of care this time. A few days after the announcement that she was expecting her third child, Kate missed Prince George's first day at school as she was too poorly to attend. She made her first public appearance almost five weeks later, attending a mental health reception at Buckingham Palace with the Duke of Cambridge and Prince Harry. At the time a royal aide said: "The Duchess' condition is improving but she's still suffering from hyperemesis gravidarum." Kate was well enough to make a surprise appearance at Paddington station in October, joining William and Harry at a charity event, where she danced on the platform with Paddington Bear. And the following day Kensington Palace announced that the Cambridges' baby was due in April, interpreted as indicating the duchess's 12-week scan had taken place. It is thought a number of Kate's engagements were postponed due to her illness, and in the new year she carried out a significant number as her baby bump became more prominent. During January, Kate attended a string of official engagements and appeared to be back in good health, and at the end of the month she travelled with William to Norway and Sweden for an official visit. Other high-profile events as her pregnancy developed and her baby bump grew included an away day to Sunderland, a Royal Foundation engagement with the duke, Prince Harry and Meghan Markle, and the launch of an expert panel to look at supporting the early years development of children. Kate bowed out of official duties with a flourish, attending two Commonwealth events with her husband before her maternity leave began. Advertisement

Inside the £7,500-a-night Lindo Wing with the world's best doctors on tap and Champagne on the wine list

With its gourmet menu, luxury toiletries and personalised care, The Lindo Wing offers a quality of service worthy of a five-star hotel.

So it is of little surprise the Duke and Duchess of Cambridge have once again selected the exclusive maternity ward at St Mary's Hospital in Paddington, central London, for the birth of their third child.

A baby boy weighing 8lbs 7oz was born inside the wing on St George's Day, with Prince William by his wife's side during the birth.

The latest price list, from July 2017 to March 2018, states that a standard room package, including a one-night stay, costs from £5,900, while a deluxe package is £6,275

Prince George, four, and Princess Charlotte, two, were also born in the private wing, as were Prince William, 36, and Prince Harry, 33.

With such high-profile patients and prices starting at £5,900 for a one-night stay - rising to £6,275 for a deluxe package and even higher for the ward's suites - very few will ever experience the luxury of the Lindo.

The hospital is also known for going above and beyond to provide premium aftercare for its discerning clients.

A brochure for the wing reveals how each room comes equipped with satellite TV offering 'major international channels'.

A police officer stands outside the Lindo Wing of St Mary's Hospital as Kate was admitted after going in to labour

For parents looking to get away from the screen there is also a 'radio, bedside phone and a fridge'. A wide selection of newspapers and free WiFi is also available.

Patients are also offered a wine list - including Champagne - and can have afternoon tea delivered to the room.

Kate is likely to have a team of more than 20 medical experts and other staff working or on stand-by from Imperial College Healthcare NHS Trust, which runs St Mary's.

Consultant obstetrician Guy Thorpe-Beeston and consultant gynaecologist Alan Farthing will be again involved after helping to deliver Kate's previous children.

Three siblings will support each other in the 'fishbowl' of royal life Prince George, Princess Charlotte and the new royal baby will share an important bond as siblings as they face the scrutiny of royal life together. Historian Judith Rowbotham said the support they gain from their shared experience will be invaluable, particularly for future king Prince George, with the additional responsibilities he faces. Dr Rowbotham said: 'One of the downsides to being royal is that you do live in a fishbowl. The support that Prince George, Princess Charlotte and the new royal baby gain from their shared experience will be invaluable, a historian says 'Even if you're a minor royal you can still be picked up, publicised, and having the family around you, you can support each other - and laugh in a way that nobody else can quite laugh.' The Duke of Cambridge has a good relationship with his own brother, Prince Harry. 'William has certainly found having one brother to be a great help to him,' said Dr Rowbotham, a visiting research fellow at Plymouth University. 'The two brothers are extremely close and Harry understands William, just as William understands Harry, in a way that nobody else can. 'Siblings know the reality of the family circumstances in which you grow up. 'Having a cheerful, loving, supportive family, which is what the duke and duchess seem pretty committed to creating, is likely to be a very positive thing for Prince George.' William and Harry were just 15 and 12 when their mother Diana, Princess of Wales, was killed in a car crash in Paris in 1997 and the brothers sought comfort from one another during their difficult teenage years. When Harry turned 21, he described William as the one person on the planet with whom he could talk about everything. The Duke of Cambridge has a good relationship with his own brother, Prince Harry 'It's amazing how close we've become,' Harry said. 'I mean, ever since our mother died, obviously we were close, but he is the one person on this earth who I can actually really ... we can talk about anything. We understand each other and we give each other support.' The Queen and the Duke of Edinburgh have four children - the Prince of Wales, the Princess Royal, the Duke of York and the Earl of Wessex. But while the Duke and Duchess of Cambridge have just three years between their second child, Princess Charlotte, and the new baby, the Queen had a gap of 10 years between her second child, Princess Anne, in 1950 and third, Prince Andrew, in 1960. She had become monarch in the intervening years and was busy adjusting to her demanding role as head of state. Jonathan Dimbleby, Charles's biographer, described how the prince doted on Anne and his two younger siblings: 'His letters from Gordonstoun had been peppered with fond references to her and then to his baby brothers, Andrew and Edward.' Anne once said of her relatives: 'Judging by some families, I think we are all on pretty good speaking terms after all this time, and that's no mean achievement for quite a lot of families. I think we all enjoy each other's company.' Andrew, who is a third-born sibling like the new Cambridge baby, was considered the favourite. The Queen was said to have been a more relaxed mother with Andrew and her fourth child Edward, and found a better work-life balance between family time and royal duties. Advertisement

Royal baby 'will be encouraged to forge career, not carry out public duties'

The new royal baby will be encouraged to look for a career outside the royal family when he or she grows up, a historian has predicted.

Judith Rowbotham, a visiting research fellow at Plymouth University, said the Duke and Duchess of Cambridge's third child is highly unlikely ever to become king or queen.

Rather than having a public role, the new prince or princess will, as a young adult, be on the fringes of the royal family, Dr Rowbotham suggested.

Born fifth in line, the baby will fall behind both older brother and future monarch Prince George, and older sister Princess Charlotte in the line of succession.

'It's fairly secure to say that they are going to be encouraged not to worry too much about the likelihood of succession to the throne,' Dr Rowbotham said.

'This gives them considerable freedom. Just look at Prince Harry - while limited by the expectation that somebody close to the throne should not for practical reasons risk their lives in battle, he was still able to be an active soldier.

'From that point of view, I think they're going to be very much encouraged to look outside the royal family for their opportunities, to go into media or business, or become teachers or academics - whatever their personal inclination.'

The historian said the Prince of Wales was focused on the direct line of succession rather than the wider royal family.

'Prince William knows that his father's agenda is to ensure that the present royal family doesn't get too big, doesn't become something that's seen as unwieldy or a burden on the state and the taxpayer.'

She added: 'I don't think there's going to be any expectation that this particular child, once he or she becomes a young adult, will do more than turn up occasionally, on the fringes of the royal family in order to celebrate things with their father or their older brother.'

Those not destined to wear the crown have often been encouraged to pursue different paths.

Second-born King George V only became heir to the throne when his older brother Albert, Duke of Clarence, died of flu in 1892.

Prior to this, he was a career naval officer and was firmly told to focus on this life rather than being a prince. He was only seen as a minor royal.

It is rare for a third-born royal child to end up as monarch and there has been no instance so far in the House of Windsor.

William IV, a Hanoverian king who ruled from 1830 to 1837, was a third child - of George III and Queen Charlotte.

He was known as the Sailor King for his love of the sea and as Silly Billy for his rambling speeches.

Edward VI was a third child of Henry VIII. His mother was Jane Seymour.

He became king aged nine in 1547 until his death in 1553 from tuberculosis at the age of 15.

William and Kate have a St George's Day baby The royal baby has been born on patriotic St George's Day, which celebrates the patron saint of England. St George is heralded for his honour, bravery and gallantry. Surrounded by myth, one legend tells of St George's slaying of a dragon. The baby already has an older brother George and Prince Harry and Meghan Markle are set to marry in St George's Chapel in Windsor next month. The Duchess of Cambridge has gone into labour on St George's Day with the baby likely to be born this morning Under Labour's proposals St George's Day would become a UK-wide public holiday. Jeremy Corbyn is pressing ahead with plans to introduce new national holidays to mark the patron saints of England, Wales, Scotland and Ireland, if it wins the next general election. The actual St George was born in Cappadocia - an area now in Turkey - and he lived during the 3rd century. He became a Roman soldier and protested against Rome's treatment of Christians, was imprisoned and eventually executed for refusing to denounce his faith. The flag of Saint George - a red cross on a white background - is the flag of England and is incorporated into the Union Jack. April 23 is also the day Edward III founded the Order of the Garter, the senior order of chivalry in England, in 1348. Each year in June, royals who are Knights and Ladies of the Garter process in carriages to St George's Chapel in Windsor for the traditional Order of the Garter ceremony. They dress in their Garter robes - heavy blue velvet capes and black velvet hats with elaborate white ostrich plumes. The royal baby also shares his birthday with Lady Gabriella Windsor - the daughter of Prince and Princess Michael of Kent, who was also born at the Lindo Wing on April 23 in 1981. Famous names celebrating their birthdays on Monday include actors Lee Majors, James Russo, John Hannah and Dev Patel; actress Judy Davis, singer Taio Cruz, and model Gigi Hadid. The baby has just missed arriving on the Queen's 92nd birthday which was on Saturday. William and Kate are set to celebrate their seventh wedding anniversary on April 29, while Princess Charlotte turns three on May 2. Here are some other historic events which took place on April 23: 1564: William Shakespeare, English playwright, poet and actor, was born in Stratford-upon-Avon. He died on the same date in 1616. 1661: Charles II of England, Scotland and Ireland was crowned king at Westminster Abbey. 1775: Joseph Mallord William Turner, English landscape painter, was born in London. 1915: Rupert Brooke, English poet, died of blood poisoning on the Greek island of Skyros. 1927: Cardiff City beat Arsenal 1-0 in the FA Cup Final to become the first club to take the cup out of England. 1968: The first decimal coins appeared in Britain. They were the 5p and 10p pieces which replaced the old one shilling and two shilling coins. 1983: Cliff Thorburn scored the first televised maximum break of 147 in the World Snooker championships, at the Crucible Theatre, Sheffield. 1984: The United States announced the discovery of the Aids virus. 2005: The first video was uploaded to YouTube.com. Advertisement

In quotes: The Duke and Duchess of Cambridge on George, Charlotte, parenting and the new baby The Duke and Duchess of Cambridge have opened up about both the rewards of parenthood and the challenges it brings. Focusing much of her charity work on children's mental health and the importance of early intervention, Kate has spoken of how the people she has met have influenced her role as a mother. From Prince George's attempts to play tennis to Princess Charlotte's love of dance and William being in denial about baby number three, here's a look at the Duke and Duchess's family life in quotes. The third baby: 'We need Catherine to get over this first bit and then we can start celebrating. It's always a bit anxious to start with, but she's well. There's not much sleep going on at the moment' - William shortly after Kate's third pregnancy was announced. 'William's in denial' - Kate about the Duke's reaction to having a third baby. 'The baby's due any minute' - William to former Beatle Ringo Starr at an investiture. 'Ginger biscuits - but there's not much ginger can do to stop that - we've done all that' - William on how Kate had tried using ginger to stop her severe morning sickness. On George: 'It went well. There was one other parent who had more of an issue with their children - so I was quite pleased I wasn't the one' - William on George's first day at school 'George rules the roost and Charlotte isn't far behind' - William after George began full-time education. 'As a mother, just getting used to leaving my own child at the school gates, it is clear to me that it takes a whole community to help raise a child' - Kate at a mental health conference. 'He only wants to whack the ball' - Kate on trying to teach George to play tennis. 'Don't show that to George; we'll never get any peace' - William on being given a selection of brass whistles in Birmingham. On Charlotte: 'I think she's going to be trouble when she's older. All fathers say that' - William. 'My daughter Charlotte loves dancing' - The Duke at a Commonwealth reception. 'She likes sparkly things' - William. On parenting and childhood: 'Personally, becoming a mother has been such a rewarding and wonderful experience' - Kate at the Royal College of Obstetricians and Gynaecologists in London. 'There is no rule book, no right or wrong - you just have to make it up and do the very best you can to care for your family. For many mothers, myself included, this can, at times lead to lack of confidence and feelings of ignorance' - Kate also at the Royal College of Obstetricians and Gynaecologists. 'She was saying William was sort of similar and I just wanted to let her know how Family Action have been there for me' - Single father Billy revealed how the Duchess told him William initially found it difficult adjusting to parenthood. 'I've got such fond memories of being in the garden and being outside from my own childhood, and I'm sharing that with my own children, George and Charlotte, at the moment' - Kate. 'Childhood is an incredibly important moment in our lives... Our experience of the world at this early stage helps to shape who we become as adults and how we begin to feel comfortable in our own skin' - The Duchess in a video marking Children's Mental Health Week. 'I know he's a bit of a motorcycle fan himself. We talked about his bikes and the fact that he has put it on the back-burner a little bit because of his children now' - World Superbike champion Jonathan Rea on William's love of bikes. 'One lesson that we will take home with us is that children are actively encouraged to spend time outdoors, whatever the weather' - The Duke pledging to adopt the the Swedish way of life after their Scandinavian tour. 'You can't help but reflect on your own life and it's definitely had an impact on how sort of I look at how I mother, how we work as a family and you know, how we hope to bring up our children' - Kate on how her parenting skills have been influenced by her charity work. 'Particularly as a mother, there's an expectation to be super-happy all the time and one in four of us aren't' - The Duchess visiting an NHS mother and baby unit in London. Advertisement

Close friends are likely for the royal baby godparent role

The newest Cambridge baby's godparents will be announced just before the christening.

The Duke and Duchess of Cambridge have previously opted for close friends and valued family members for the spiritual role.

They will chose confidantes rather than following the Windsor tradition of selecting older royal relatives.

It is likely that the baby will have five godparents, as does Charlotte, whereas George, a future king, has seven.

George's seven godparents included Julia Samuel - a close friend of Diana, Princess of Wales, the couple's former private secretary Jamie Lowther-Pinkerton and William's cousin Zara Tindall, while Charlotte's five included Kate's school friend Sophie Carter and Laura Fellowes - the daughter of one of Diana's sisters.

Here's a look at some of the possible contenders:

William and Kate may ask another of the van Cutsem brothers who are old family friends of the Duke.

They selected William van Cutsem for George and may pick one of his siblings - Hugh, Edward or Nicholas - or perhaps Hugh's wife Rose van Cutsem this time.

The Duke of Cambridge is godfather to Hugh and Rose's daughter Grace, who was a bridesmaid at the royal wedding and almost stole the show on the balcony after covering her ears during the flypast.

Kate's Marlborough College friends include Catriona 'Trini' Foyle, Alice Avenel (nee St. John Webster), Alicia Stoddart (nee Fox-Pitt) and Hannah Carter (nee Gillingham).

Others in the couple's social circle include jockey Sam Waley-Cohen and his wife Bella; William's school friend Tom Sutton and his wife Harriet; heir to Viscount Allendale, Wentworth 'Wenty' Beaumont and his wife Vanessa; Lady Iona Hewitt; and Lady Natasha Rufus Isaacs, an old friend of Kate's who runs the fashion label Beulah London.

William and Kate's former uni flatmates are Fergus Boyd and Olivia Bleasdale who also attended their 2011 wedding.

From the royal side, William's cousin Peter Phillips could be a safe bet.

Other suggestions include the Duke's former nanny Tiggy Pettifer, William and Kate's former personal assistant Helen Asprey, Sir David Manning - the former ambassador to Washington who now acts as the couple's foreign affairs adviser - or perhaps even one of Diana's sisters Lady Sarah McCorquodale and Lady Jane Fellowes, or another of of William's cousins via the Spencer family line.

If William and Kate wanted to fully welcome Harry's bride to be Meghan Markle into the fold, what better gesture than to make her their new baby's godmother?

The move would delight Harry and secure Ms Markle's long-term position as a member of the royal family.

Ms Markle would be on hand at William and Kate's home Kensington Palace for godmotherly duties, living at a cottage with Harry at the royal residence.

But have the couple known the American actress for long enough to assign her with the responsibility?

William's former top aide and ex-press secretary Miguel Head is also a possibility.

He has been a trusted member of the KP team and is leaving his post as private secretary in July, but a warm tribute was issued when his departure was announced.

William was described as feeling 'incredibly lucky to have benefited from Miguel's advice and support over the last decade'.

Mr Head was described as a 'valued adviser during an important period in His Royal Highness's life'.

William was just 16 when he became godfather to Prince Constantine Alexios of Greece and Denmark in 1998.

The Duke's cousin Lady Louise Mountbatten-Windsor, daughter of the Earl and Countess of Wessex, is only 14 years old, but selecting Louise as a godparent would delight the Queen.

The youngster was one of William and Kate's bridesmaids.

A home in a palace, a private education and a focus on mental well-being

Growing up as part of the Cambridge family, the new royal baby will be one of the most famous youngsters in the world.

The Duke and Duchess of Cambridge, however, work hard to make sure their children have as much of a normal life as possible.

The baby's milestones - leaving hospital after being born, their christening and their first public engagement - will be covered in minute detail by the media.

William and Kate will release photos of their third-born at key moments to encourage the press to avoid using paparazzi shots instead.

But for the most part, the baby's early years will be spent happily away from the cameras.

So what will the royal baby's childhood be like?

Home

The baby's main home in London is Kensington Palace's Apartment 1A, which used to belong to Princess Margaret.

It was refurbished at a cost of £4.5 million to the taxpayer and with a big, private walled garden, there is plenty of space to play outside, as well as some 20 rooms to explore.

The baby's main home in London will be at Kensington Palace in the west of the capital

The baby's nursery may well feature some Ikea furniture.

William and Kate revealed they turned to the popular Swedish firm for George and Charlotte's rooms.

The second home

William and Kate also have a 10-bedroom Georgian Grade II listed house - Anmer Hall on the Queen's Sandringham Estate - in Norfolk.

It has its own private swimming pool, a full-size, artificial grass tennis court and vast grounds.

The palaces and castles

Christmases will partly be at Sandringham House in Norfolk with the royals, at Anmer Hall or with the Middletons in Berkshire, and trips to Buckingham Palace and Windsor Castle will expose the youngster to opulent surroundings.

Nursery

At the age of two, the third Cambridge child will start nursery.

Charlotte attends Willcocks Nursery School - a short distance from Kensington Palace - which charges fees of just over £3,000 a term.

Kate, a keen amateur photographer, will take snaps of her youngest child on their first day to release for the public to see.

The school has been described in reports as having a loyal following of 'old English families and chic foreigners' and is something of a 'hidden gem' in the shadow of the Royal Albert Hall.

Education

This new royal baby will probably follow George to his private school Thomas's Battersea - which Charlotte is expected to attend as well.

Fees at the south London school cost more than £17,600 a year.

The school's most important rule is 'Be kind' and it expects its pupils 'not just to tolerate but to celebrate difference, including faith, beliefs and culture'.

William boarded at Eton, while Kate was a part-time boarder at Marlborough College - but it is not yet known whether their children will go to boarding school.

Mental well-being

Kate supports a range of mental health charities and will be tuned in to looking after her children's mental health.

She has opened up about how she wants to raise her children, saying qualities such as kindness were just as important as academic or sporting success.

The duchess said: 'My parents taught me about the importance of qualities like kindness, respect and honesty, and I realise how central values like these have been to me throughout my life.'

William too has spoken about the importance of talking about mental health.

'Everybody has mental health and we shouldn't be ashamed of it and just having a conversation with a friend or family member can really make such a difference,' the duke said.

Nanny and other staff

There will always be a nanny on the scene, as is customary for royal children.

George and Charlotte's full-time live-in nanny is Spanish-born Maria Teresa Turrion Borrallo, who trained at the prestigious Norland College.

Help from housekeepers and aides will also be the norm.

Royal protection officers will always be close by, but hands-on parents the duke and duchess will strive to make up for the lack of freedom that royal childhoods can sometimes provide.

Trooping the Colour

William and Kate's children have already made appearances on the Buckingham Palace balcony for the annual parade marking the Queen's official birthday.

Royal youngsters also get to witness historic occasions first hand such as royal weddings and even coronations.

But the new baby will still be tiny by the time of Harry and Meghan's wedding - and will be expected to stay at home with the nanny.

Pets

The family has a black cocker spaniel called Lupo and Charlotte has a hamster called Marvin.

The baby will also have to get used to the Queen's beloved corgis and dorgis - a cross between a corgi and a dachshund.

Holidays

William and Kate are both keen skiers and took George and Charlotte on their first skiing holiday to the French Alps in 2016.

The Middletons have enjoyed frequent breaks on the Caribbean island of Mustique, and part of the summer holidays will be spent with the Windsors at Balmoral in the Scottish Highlands with grandfather the Prince of Wales and great-grandmother the Queen.

Royal children greet the Queen with a kiss on both cheeks and a bow or a curtsey.

Family

Prince Harry is already a doting uncle to George and now new aunt-to-be Meghan Markle is on the scene as well.

The Middletons will also play an important part in the baby's life. Kate is particularly close to her family - mother Carole, father Michael, sister Pippa and brother James.

Timeline of the Duchess of Cambridge's pregnancy Here is the timeline for the Duke and Duchess of Cambridge's third baby: September 4 , 2017 - Kensington Palace announces that William and Kate are expecting their third child. The Duchess, who is suffering from severe morning sickness known as hyperemesis gravidarum, pulls out of a planned appearance at the Hornsey Road Children's Centre in London.

, 2017 - Kensington Palace announces that William and Kate are expecting their third child. The Duchess, who is suffering from severe morning sickness known as hyperemesis gravidarum, pulls out of a planned appearance at the Hornsey Road Children's Centre in London. September 7 - Prince George starts school - but Kate is too poorly to accompany him to the school gates, with William taking the young prince on his first day.

- Prince George starts school - but Kate is too poorly to accompany him to the school gates, with William taking the young prince on his first day. October 17 - William and Kate reveal their baby is due in April. BBC newsreader Simon McCoy reacts by declaring on air: 'Clear your diaries. Get the time booked off, 'cos that's what I'm doing.'

- William and Kate reveal their baby is due in April. BBC newsreader Simon McCoy reacts by declaring on air: 'Clear your diaries. Get the time booked off, 'cos that's what I'm doing.' November 28 - Kate congratulates Prince Harry and Meghan Markle on their engagement.

- Kate congratulates Prince Harry and Meghan Markle on their engagement. December 25 - The Duke and Duchess, Prince Harry, Meghan Markle and the royal family attend church at Sandringham on Christmas Day.

- The Duke and Duchess, Prince Harry, Meghan Markle and the royal family attend church at Sandringham on Christmas Day. January 8 , 2018 - Two-year-old Princess Charlotte starts at Willcocks Nursery School, with Kate taking the photographs released to celebrate her big day.

, 2018 - Two-year-old Princess Charlotte starts at Willcocks Nursery School, with Kate taking the photographs released to celebrate her big day. February 28 - Kate, Meghan Markle, Harry and William appear on stage at a Royal Foundation forum - the first time the 'fab four' have carried out an official engagement together.

- Kate, Meghan Markle, Harry and William appear on stage at a Royal Foundation forum - the first time the 'fab four' have carried out an official engagement together. April 1 - Kate attends the Easter Sunday service at St George's Chapel, Windsor.

- Kate attends the Easter Sunday service at St George's Chapel, Windsor. April 9 - Parking restrictions and barriers are put in place outside the Lindo Wing at St Mary's Hospital.

- Parking restrictions and barriers are put in place outside the Lindo Wing at St Mary's Hospital. April 16 - William welcomes delegates to UK for the Commonwealth Heads of Government Meeting, and holds audiences and attends events throughout the week.

- William welcomes delegates to UK for the Commonwealth Heads of Government Meeting, and holds audiences and attends events throughout the week. April 21 - William and the rest of the royal family - minus Kate - celebrate the the Queen's 92nd birthday at a concert at the Royal Albert Hall in London.

- William and the rest of the royal family - minus Kate - celebrate the the Queen's 92nd birthday at a concert at the Royal Albert Hall in London. April 23 - Kate is admitted to the Lindo wing at St Mary's in Paddington in the early stages of labour. Advertisement

Kate's stylist Natasha Archer is spotted leaving the Lindo Wing just four hours after the Duchess was admitted to hospital ahead of the royal baby's arrival

The Duchess of Cambridge's personal stylist has been spotted leaving the Lindo Wing just hours after the royal was admitted to hospital in the early stages of labour.

Natasha Archer, who has been working with the royals for almost ten years, left St Mary's Hospital in Paddington just after 10am, after Kate went into labour in the early hours this morning.

Ms Archer - who is married to Getty Images' official Royal photographer Chris Jackson and helps Kate meticulously plan her outfits for official engagements and overseas tours - was wearing a pair of brown patterned trousers and black knitted jumper.

Not long now! Natasha Archer, who has been working with the royals for more than four years, left St. Mary's Hospital after Kate went into labour in the early hours of Monday morning

Right-hand woman: Tash, as she is known among friends, has been credited with having a hand in Kate's style and the royal is said to admire her own fashion sense and trusts her eye for clothes

The royal aide was originally hired as Kate's personal assistant and, according to insiders, was officially tasked with making the Duchess look more 'regal' as per the Queen's request.

She first caught the world's attention when she joined royal hairdresser Amanda Cook-Tucker entering the Lindo Wing after the birth of Prince George in 2013 - and was rumoured to be responsible for picking out the now-iconic blue and white polka dot dress that Kate later stepped out in.

'Tash', as she is known among friends, has been credited with having a hand in Kate's style and the Duchess is said to admire her own fashion sense and trusts her eye for clothes. She orders things online and calls in clothes for Kate from designers and the high street.

A privately-educated university graduate, Ms Archer went to Uppingham boarding school, before reading Hispanic Studies at King's College London.

By royal appointment: A privately-educated university graduate, Natasha went to Uppingham boarding school, before reading Hispanic Studies at King's College London

She recently celebrated her first wedding anniversary, having tied the knot with Mr Jackson in April 2017 at Chateau Rigaud, a medieval French mansion near Bordeaux.

Confirming the engagement in 2016, Mr Jackson wrote on Instagram: 'I'm definitely punching above my weight.'

He has been courting Ms Archer since 2015 and adds of his proposal: 'Apparently, it was a long time coming.'

Holly Willoughby says she's 'filled with jealousy' as the Duchess of Cambridge goes into labour

Kensington Palace announced Kate Middleton had been admitted to hospital in the early stages of labour on Monday.

And Holly Willoughby said she was 'filled with jealously' as she discussed the news of the royal baby's imminent arrival on This Morning.

The broody television host, 37, could hard contain her excitement following the news, later reading the auto-cue wrong with Phillip Schofield joking they needed help to 'stay afloat'.

Broody: Holly Willoughby said she was 'filled with jealously' as she discussed the news of the royal baby's imminent arrival on This Morning

As they kick-started the show, Holly exclaimed: 'It's St George's Day! What a better way to celebrate than with a royal baby.

'Whenever I hear someone is in labour, I get filled with jealousy. It's the most magical moment when you hold that baby for the first time. It's her third one, she knows what she's doing, hopefully she enjoys it in a weird way.'

Phillip then read out the formal statement from Kensington Palace, which said: 'Her Royal Highness The Duchess of Cambridge was admitted to St Mary's Hospital, Paddington, London, earlier this morning in the early stages of labour.

Giddy: The broody television host, 37, could hard contain her excitement following the news, later reading the auto-cue wrong with Phillip Schofield joking they needed help to 'stay afloat'

'The Duchess travelled by car from Kensington Palace to the Lindo Wing at St Mary's Hospital with The Duke of Cambridge.'

The ITV duo cut into a 'psychic' banana in order to try to decipher the gender of what Kate's third child would be.

The mother-of-three asked the fruit if it will be a boy, telling the audience if there was a dot it was a yes and a Y it would be a no. The pair appeared giddy as they cut into the banana to reveal a dot.

Otherwordly: The ITV duo cut into a 'psychic' banana in order to try to decipher the gender of what Kate's third child would be

Royal boy? Holly asked the fruit if it will be a boy, telling the audience if there was a 'dot' it was a yes and a 'Y' it would be a no - revealing a dot

Later on in the show, the pair erupted into fits of giggles after Holly read the auto-cue wrong when doing a segment about businesses staying afloat.

Mortified, she said: 'I said that completely wrong! I'll do it again.'

To which Phillip joked: 'Can you help us stay afloat?'