The threat of an imminent terror attack has already cancelled the Changing of The Guard and Chelsea Football Club's title celebrations.

But it's not only royal and football fans who could suffer.

Other key social events and concerts are expected to see tougher security or face the threat of being pulled.

Justin Bieber devotees upset by the carnage at the Ariana Grande concert on Monday are currently using social media to beg the star to cancel his July shows.

Justin Bieber fans pleaded on Tuesday for his upcoming British tour dates to be cancelled

One implored his manager online: 'Cancel Justin's concert in the UK, please! We want him to be safe.'

As organisers around the country rush to assure the British public, Gary Barlow has told Take That fans extra security will be in place for the band's Liverpool gig which was postponed from Tuesday to Friday.

Politicians are yet to announce when national campaigning will resume but the defiant Queen has attended her engagements as normal with a smile.

From Latitude to Wimbledon, here are Britain's upcoming events that will have increased security after the Manchester suicide bombing which killed 22 on Monday.

Music

Gary Barlow has reassured fans that his band Take That do not plan to cancel further dates in their current tour.

The group's Liverpool Arena performance, which was scheduled for Tuesday but suspended in the wake of the attack, has been postponed to Friday.

Barlow promised that extra security was in place and that Take That's Wonderland album tour would go on as normal.

Barlow promised that extra security was in place and that Take That's Wonderland album tour would go on as normal

Spreading a positive message to fans, Barlow Tweeted on Wednesday: 'We've got extra security in every venue to keep us all safe xx.'

He followed it with a second Tweet reading: 'See you Friday night Liverpool ! We need to sing a little louder, reach a little higher and clap our hands a little harder together.'

Radio 1's Big Weekend will go ahead this weekend with 'heightened security' the network added.

Radio 1 controller Ben Cooper assured music fans the Hull event will go ahead but with increased security involving armed police, dogs and double searches.

The decision was made on Wednesday following a safety meeting with emergency services, local authorities and event security.

He said: 'Our thoughts are with all those who have been affected by Monday night's events.

'What happened at Manchester Arena has obviously dominated our thinking about how we can provide a safe and secure environment this weekend.

Ariana Grande's half-brother, Frankie Grande, is due to perform in London's Bush Hall on Saturday night and the venue believes the event will go ahead

'That has been our absolute priority and security has been increased for our audiences, artists and for those working across the weekend.'

He added that no artists had pulled out of the line-up, and the feedback from listeners was that it should go ahead.

Now in its 14th year, the two-day show includes an international line-up, featuring the likes of Katy Perry, Lorde, Kasabian, Stormzy, Biffy Clyro, Little Mix, Dua Lipa, Zara Larsson and Christine and the Queens.

Ariana Grande's half-brother, Frankie Grande, is due to perform in London's Bush Hall on Saturday night and the venue believes the event will go ahead with the appropriate security in place.

A spokesman said: 'As far as we know it's still happening.'

They said they would update their social media channels if there were any cancellations.

Frankie rose to prominence on Broadway and appeared in Celebrity Big Brother last year. The gig is part of his Livin' La Vida Grande Live Tour.

His spokesman has been contacted for comment.

The Latitude festival will go ahead with extra security at Henham Park in Suffolk

Justin Bieber fans pleaded on Tuesday for his upcoming British tour dates to be cancelled, underscoring the potential repercussions to music acts with a young fan base from the suicide bombing at an Ariana Grande concert in Manchester.

Canadian heartthrob Bieber, 23, is due to play an open air concert at London's Hyde Park in July. But fans flooded social media saying his appearance should be axed for the safety both of fans and the singer himself.

The organisers of this year's Latitude music festival in Suffolk today vowed that the weekend's devastating attack at a pop concert in Manchester will not alter plans for the four-day event starting on 13 July.

In a defiant statement a spokesman said: 'We are certain we will not be defeated by such cowardice and can therefore confirm that the Latitude festival will be going ahead as planned.'

This year's festival is being headlined by Goldfrap, Mumford & Sons (pictured), The 1975 and John Cale as well as line-up of comedians, poets and writers

The spokesman added that the organisers would be holding a 48 hour silence on social media in sympathy with all those that lost their lives or were injured physically or mentally by the devastating attack in Manchester.

'Our thoughts are with those affected as well as the emergency services working tirelessly to keep us safe in all that we do.'

Latitude is already sell out for the event which begins at Henham near Southwold on July 13 and more than 35,000 fans are expected at the giant campsite.

This year's festival is being headlined by Goldfrap, Mumford & Sons, The 1975 and John Cale as well as line-up of comedians, poets and writers.

Organisers said they will be reviewing security after talks with police.

Glastonbury festival will also likely have increased security as 100,000 descend on the Somerset farm on 22 June.

Glastonbury festival will also likely have increased security as 100,000 descend on the Somerset farm

A spokesman for Avon and Somerset Constabulary said: 'We work closely with Glastonbury festival to plan for major incidents and our plans are regularly reviewed.

'All our partner agencies come together in multi-agency exercises to test these plans and procedures.

'There is no intelligence to suggest any cause for alarm regarding the festival.'

Sport

Manchester United's UEFA Cup final against Ajax with go ahead in Stockholm tonight as planned with a minute's silence at the beginning.

A UEFA statement read: 'There is currently no specific intelligence which might suggest that any of the UEFA Europa League final activities in Stockholm may be the target of attacks.

Police patrol the outside of the Friends Arena in Stockholm ahead of the Europa League final on Wednesday

Workers construct temporary security barriers outside the stadium in the Swedish city

The Manchester United squad were put through their paces ahead of the Europa League final against Dutch club Ajax

'UEFA has been closely working with local authorities and the Swedish FA for many months and the terrorist risk had been taken into account since the very beginning of the project.

'Due to the tight security arrangements, UEFA urges fans to arrive at the stadium as early as possible, as detailed checks will be made at the entrances, resulting in potential delays in accessing the stadium'.

The FA cup final between Chelsea and Arsenal at Wembley on Saturday at 5.30pm will go ahead but Chelsea FC has cancelled Sunday's Premier League victory parade through the streets of west London.

Arsenal had been set to broadcast the cup final live on a big screen at the Emirates Stadium but the Gunners announced on Wednesday that they have had to 'reluctantly' pull the plug on the event. The club has said there will be no parade if it wins the FA cup.

Chelsea have cancelled their trophy parade, which was due to take place on Sunday

A Chelsea statement read: 'Everyone associated with Chelsea Football Club offers our heartfelt condolences to those affected by Monday's terror attack in Manchester. Our thoughts go out to all the victims, and their families and friends.

'In light of these tragic events, we feel it is inappropriate to go ahead with the victory parade in London on Sunday.

'Given the heightened security threat announced by the Government, and recognising that this is a developing situation, we have given this careful consideration. We strongly believe, in the interests of everyone, this is the correct course of action. We are sure our fans will understand this decision.'

The Emirates Stadium will no longer host an FA Cup final screening party on Saturday

The Champions Trophy cricket tournament hosted at stadiums in London, Birmingham and Cardiff will begin on 1 June.

The ICC said it will review the security for the Champions Trophy starting June 1, and the Women's World Cup, that follows it immediately afterwards in the United Kingdom.

The Champions Trophy cricket tournament hosted at stadiums in London, Birmingham and Cardiff will begin on 1 June. Pictured: The Oval

'We operate on advice from our Tournament Security Directorate — in conjunction with the ECB and relevant authorities — to ensure that we have a robust safety and security plan for both tournaments,' ICC said in a statement.

'We will continue to work with authorities over the coming hours and days and review our security in line with the threat levels. The security situation has been very much front and centre of our preparations and we constantly review our procedures to guarantee they are as effective as possible to keep everyone safe.'

Wimbledon, which starts on Monday 3 July, will likely see armed officers and tighter security checks than ever before as organisers recognise the increased threat level.

The All England Lawn Tennis Club told MailOnline: 'We will ensure our plans are commensurate with the existing threat level in London and the UK. We will take any appropriate measures to ensure the safety of the whole Championships.'

Wimbledon , which starts on Monday 3 July, will likely see armed officers and tighter security checks than ever before as organisers recognise the increased threat level

The Royals

The Changing The Guard ceremony at Buckingham Palace was cancelled on Wednesday to redeploy police officers.

The New Guard, the RAF Queen's Colour Squadron, were due to process to the Palace from Wellington Barracks to replace the Old Guard in the traditional ceremony which attracts hundreds of tourists.

A Ministry of Defence spokeswoman said: 'The decision has been taken in order to release the police who would otherwise be dealing with the road closures.'

Today dozens of armed police lined the streets as The Queen arrived at St Paul's Cathedral this morning with her husband the Duke of Edinburgh.

The pair led worshippers at a special service of dedication and thanks for the Order of the British Empire ahead of its centenary next month.

Dozens of armed police lined the streets as The Queen arrived at St Paul's Cathedral this morning with her husband the Duke of Edinburgh

Crowds were kept behind metal fences and watched by officers with machine guns

Politics

General election campaigning was postponed when news of the attack broke.

Labour's national campaigning in still suspended but the party has told its candidates they can resume local efforts today while The Tories have not set a restart date.

Jess Phillips, who is running for Labour in Birmingham Yardley, said: 'If you stop everything, they win. It's right to show respect for those who died for a period, but in Britain we never have had a culture where we allow this to stop us.

General election campaigning was postponed. Pictured: Theresa May with Chief Constable of Greater Manchester Police, Ian Hopkins Home Secretary Amber Rudd

'In London after 7/7, people got back on those trains the next day and carried on working.'

Andrew Mitchell, the Conservative former international development secretary, said: 'I think we need to send the message that we don't allow terrorists to change our way of thinking or alter our values.'

The Houses of Parliament are closed to non-passholders and tours have been stopped indefinitely.

Metropolitan police boss Cressida Dick said Police are working hard to ensure major sporting and cultural events can continue with minimal disruption, adding: 'London is open for business.'

Ms Dick said: 'We are working closely with event organisers, we will be risk assessing every event.

'We want London to stay open for business because London is open for business. It's our job to keep people as safe as we possibly can.'