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A statue commemorating the life of the suffragist, Millicent Fawcett, has been unveiled opposite Parliament.

She campaigned for women's right to vote during the early 20th Century and is seen as one of the most influential feminists of the past 100 years.

Prime Minister Theresa May paid tribute to the "truly great" campaigner's "lasting impact" after it was unveiled.

The bronze casting, by the artist Gillian Wearing, is the first statue of a woman erected in Parliament Square.

Media playback is unsupported on your device Media caption The moment the Fawcett statue was unveiled

It features her holding a banner reading "courage calls to courage everywhere" and was commissioned as part of this year's centenary of the 1918 Representation of the People Act - which gave some women over the age of 30 the vote.

After the statue was unveiled by local schoolchildren, Mrs May said: "I would not be standing here today as prime minister, no female MPs would have taken their seats in Parliament, none of us would have had the rights and protections we now enjoy, were it not for one truly great woman - Dame Millicent Garrett Fawcett."

It followed a campaign by the feminist writer and activist Caroline Criado Perez, who also led last year's successful effort to get Jane Austen to appear on the £10 note.

She said she came up with the idea for the statue when she was out running on International Women's Day in 2016 and realised the only historical figures commemorated there were men.

Image copyright Reuters Image caption Theresa May, Mayor of London Sadiq Khan and Caroline Criado Perez watch the unveiling

Image copyright Getty Images Image caption Labour's leader and deputy leader were among politicians at the official unveiling

Image copyright Getty Images Image caption Members of the public also attended the ceremony

The 11 existing statues in Parliament Square are of Nelson Mandela, Abraham Lincoln, Mahatma Gandhi, former prime minister of South Africa Jan Smuts and former British prime ministers Sir Winston Churchill, Sir Robert Peel, David Lloyd George, Viscount Palmerston, Earl of Derby Edward Stanley, Earl of Beaconsfield Benjamin Disraeli and George Canning.

Ms Criado Perez launched the campaign for a Fawcett statue from her phone, as she sat on a bench outside Buckingham Palace at the end of her run.

Asked how it felt to see the statue being unveiled just two years after launching the petition, she said: "I can't really take the whole thing in. It's too big really to contemplate that it's finally happening."

'It has taken a long time'

By Brian Wheeler in Parliament Square

Some of the hundreds of women and men who gathered to watch the unveiling ceremony were simply there to witness a moment in history.

"It is very important to me to see a woman in Parliament Square. It has taken a long time," said student Poppy Sharpe, who was there with her friend Macushla Savvides (pictured above).

Boys grow up seeing that they can become someone immortalised as a statue, said Emma Camp, but girls don't: "It's about role models."

But for others it was a chance to stress that the battle for equality fought by Millicent Fawcett and the other suffragists is far from over.

The 50:50 campaign, which calls for equal representation in Parliament, was out in force.

"We need more statues of women, but we also need more women writing statutes," said the group's Frances Scott.

Tsitsi Matekaire, of the Equality Now campaign, said she hoped it would highlight to global struggle for rights for women and girls.

Jeanne Rathbone, wearing her Votes For Women sash, wanted to highlight her campaign for a statue of Anglo-Irish suffragist Charlotte Despord in South London.

How much had she known about Fawcett before the campaign for a statue?

"She was one of my heroines - not the Pankhursts. She stayed with the fight the whole way through and it is about time she was honoured."

Discussing how Gillian Wearing was selected to create the statue, Ms Criado Perez said: "Other designers and artists just didn't get it like Gillian did. For me, it was very important (Millicent) was middle aged.

"I wanted her to be standing there not at all sexualised, but statesmanlike. We wanted the statue to be her at a meaningful age, so we chose when she was awarded a brooch from the NUWSS (National Union of Women's Suffrage Societies) at 50 years old.

"She's directly facing Parliament with her placard, so the MPs can see her everyday and think, 'I should probably go and sort that problem out'."

Ms Criado Perez said she would "like to see more statues overall and more representations of women in public art, specifically women who have existed in the past".

"The more that I read about the amazing women that have come before me, the more angry I am about why I didn't know about them - why aren't there statues of these people?" she added.

Who was Millicent Fawcett?

Media playback is unsupported on your device Media caption Caroline Criado-Perez: 'If she were a man she'd have hundreds of statues'

Born in 1847, she was a pioneering feminist, intellectual and union leader who campaigned for women's right to vote

She was a suffragist - not a suffragette

She shared the same aims as the suffragettes - the more radical group led by Emmeline Pankhurst - but favoured non-violent protest

In 1897 she formed the National Union of Women's Suffrage Societies

She also played a key role in the founding of Newnham College, the second Cambridge university college to admit women

In 1902, she led an all-female investigation into the appalling conditions in British concentration camps in South Africa, during the Boer War

Dame Millicent died in 1929, a year after women were granted the vote on equal terms to men

Speaking before the unveiling of the statue, at a private viewing, London Mayor Sadiq Khan said: "When you think of the great people in Parliament Square and when you realise that not one of them is a woman, it sort of begs the question, are we saying there haven't been incredible women in the past? That our country hasn't been built on the back of great women?"

"The whole process - from petition to project manager - has been made up of solely women. That should make us all incredibly proud."

He added: "Londoners are going to love it. They will be blown away."

The Suffragists – were first to organise, forming local societies in the 1860s The Suffragettes – were active for just 10 years after splitting from the Suffragists in 1903 Suffragists – focused on middle-class women Suffragettes – encouraged working-class women to protest Suffragists – held public speaking events, lobbied MPs and wrote petitions Suffragettes – disrupted meetings, vandalised art and buildings and were often arrested Suffragists – dinner parties! Suffragettes – hunger strikes! Everyone organised marches! Suffragists – successfully built support in parliament over many years Suffragettes – increased publicity and re-energised the cause but also sparked a backlash Then in World War One, women took new roles in factories and beyond... ...which made denying them voting rights harder than ever After 50 years of women standing up and speaking out... Parliament finally passed a law giving some women the vote in 1918 Click next arrow to proceed Loading ... Swipe to progress Go back to start

A rival campaign, led by former Conservative MP Sir Neil Thorne, and backed by the first female Commons Speaker Baroness Boothroyd, argued Emmeline Pankhurst should have been immortalised in bronze in Parliament Square instead, as she is better known than Ms Fawcett.

Media playback is unsupported on your device Media caption Who were the suffragists?

Westminster Council has not ruled out a statue of Ms Pankhurst in the square at some stage - provided campaigners move an existing statue of the suffragette leader that stands in nearby Victoria Gardens first.

There have also been calls for a statue of Britain's first woman prime minister, Lady Thatcher, in the square, but the plan was rejected by Westminster Council.