King Charles III, Prince William and Harry have marched behind the Queen's coffin in a solemn procession to Westminster Abbey as thousands of mourners line the streets.
The nation has come to a standstill to honour the Queen with 2,000 people filling Westminster Abbey for the State Funeral today.
In an echo of Princess Diana's funeral, Harry and William stood shoulder to shoulder in the funeral procession through the streets of London.
Tonight the Queen will be laid to rest alongside her beloved husband, Prince Philip, the Duke of Edinburgh, following a service at St George's Chapel at Windsor Castle.
The arrival of Britain's new King alongside his sons came after marching with senior royals behind his mother's coffin as she was moved from Westminster Hall, where she has been Lying in State since Wednesday, to Westminster Abbey.
Crowds have flocked to London, Windsor and royal sites throughout the UK on the national bank holiday, with the service drawing millions of TV viewers across the globe.
All public viewing areas for the funeral procession in the capital were full by just after 9am.
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A single toll from Big Ben signalled the start of the service at Westminster Abbey, where kings and queens have been crowned since 1066, and where the new monarch was sitting surrounded by the royal family he now leads.
Presidents and prime ministers from across the globe filled the Abbey, with US President Joe Biden among the mourners alongside France's President Emmanuel Macron, New Zealand Prime Minister Jacinda Ardern, her counterpart from Canada Justin Trudeau, and Brazilian President Jair Bolsonaro.
The King looked very emotional during the singing of the national anthem at Westminster Abbey.
Charles remained silent during the song, while his siblings and members of the royal family sang along.
Gripping his ceremonial sword, the King looked downcast as he stared straight ahead while a piper played Sleep, Dearie, Sleep.
In a personal touch, the wreath adorning the Queen's coffin had a handwritten note, which was penned by Charles.
The message said: "In loving and devoted memory."
Two of the Queen's great-grandchildren, future king Prince George, aged nine, and his seven-year-old sister Princess Charlotte, joined their parents at the state funeral, after reaching an age where they can participate in the national event.
Prince George was comforted by his mother, the Princess of Wales, during the service.
The Archbishop of Canterbury, Justin Welby, told attendees of the Queen's state funeral that grief felt across the world arises from the Queen's "abundant life and loving service, now gone from us".
In his sermon, he said: "People of loving service are rare in any walk of life. Leaders of loving service are still rarer.
"But in all cases those who serve will be loved and remembered when those who cling to power and privileges are long forgotten.
"The grief of this day - felt not only by the late Queen's family but all round the nation, Commonwealth and world - arises from her abundant life and loving service, now gone from us.
"She was joyful, present to so many, touching a multitude of lives."
In Whitehall and Parliament Square, the funeral service moved some to tears.
As a crowd of thousands listened to the funeral, the proceedings from Westminster Abbey relayed by speakers above the street, some sang quietly along with the hymns.
As the funeral service began at Westminster Abbey, the crowd around Parliament Square began to drift - some for a much-needed sit down, others to grab a quick sandwich or a bite to eat.
But slowly, many edged back towards Whitehall and to the best viewing points in Parliament Square to await the final procession of the Queen's coffin through London and onwards to Windsor.
When the time came for the two-minute silence, not a sound could be heard the length of Whitehall as many in the crowd bowed their head or closed their eyes.
Even as the two-minutes elapsed, many remained hushed and quiet. It was not until the time came, a few moments later, to sing the national anthem that the crowd roused itself, applause breaking out across the length of Whitehall when it came to a close.
Tears streamed down the faces of mourners among the crowds on Constitution Hill as the service drew to a close.
Others began putting away iPads and tablets, which they streamed the service on and held up to allow those further back to watch, in anticipation for the passing of the cortege.
The street was lined with a half-company from the Royal Air Force (RAF) standing alongside police officers.
As the national anthem was sung after the service, the clouds parted and the sun shone through the trees in Green Park.
William had walked behind his grandmother's coffin with his brother the Duke of Sussex and his cousin Peter Phillips, following in the footsteps of Charles and his siblings.
Westminster Abbey was the venue for the Queen and Duke of Edinburgh's 1947 wedding and now this ancient place of worship was the fitting venue for her funeral.
Among the congregation were all six living former prime ministers - Sir John Major, Sir Tony Blair, Gordon Brown, Theresa May, David Cameron and Boris Johnson - with members of the Cabinet led by the current premier, Liz Truss.
A large number of minor royals were invited including the Queen's granddaughter Zara Tindall and her husband former England rugby star Mike Tindall, Princesses Beatrice and Eugenie and their spouses, and Sarah, Duchess of York.
Other attendees included a group of Chelsea Pensioners in their red tunics and Knights of the Garter in their velvet cloaks.
A number of people recognised in the Queen's Birthday Honours for their efforts during the Covid-19 pandemic were also invited.
Overnight, the final members of the public queued to see the Queen lying in state in Parliament's Westminster Hall before her coffin is moved to the nearby abbey.
The royal family, including Prince George and Princess Charlotte, are among the 2,000 people gathered at Westminster Abbey to remember the late monarch this morning, before a committal service at Windsor Castle.
The day marks the climax of what is being regarded as the biggest security operation the UK has ever seen, surpassing the operation for the Platinum Jubilee weekend and the London 2012 Olympics, which saw up to 10,000 police officers on duty per day.
Following the service, the royal family walked in procession behind the Queen's coffin as it was carried through the Gothic church by the military bearer party.
The King and the Queen Consort walked immediately behind the coffin, followed by the Princess Royal and Vice Admiral Sir Tim Laurence, the Duke of York, the Earl and Countess of Wessex, and the Prince and Princess of Wales.
George and Charlotte walked with their parents side-by-side in formation, followed by their uncle and aunt the Duke and Duchess of Sussex and other members of the royal family.
The service came after the Queen's lying in state period at Westminster Hall, which ended at 6.30am.
Chrissy Heerey, who was the last member of the public to leave the Hall, said: "It's one of the highlights of my life and I feel very privileged to be here."
Sima Mansouri, who was the penultimate member of the queue to pass through Westminster Hall to see the Queen's coffin, said: "It was extremely spiritual. I know it might sound silly but I felt that she was there, her presence."
The Queen's coffin was taken in a grand military procession from the Palace of Westminster to Westminster Abbey for the funeral at 11am.
Before the service, conducted by the Very Rev David Hoyle, Dean of Westminster, the tenor bell was tolled every minute for 96 minutes, reflecting the years of the Queen's life.
Heads of state, prime ministers and presidents, members of European royal families and key figures from public life have gathered at the abbey.
But invitations were not sent to Russia and Belarus due to the invasion of Ukraine, while Taliban-ruled Afghanistan, Myanmar's military junta and Syria's Bashar Assad were also excluded.
The Queen's Piper, Warrant Officer Class 1 (Pipe Major) Paul Burns, is playing the traditional lament Sleep, Dearie, Sleep after The Last Post, two minutes' silence, Reveille and the national anthem.
During the service the King and the Queen Consort sat in the ornate Canada Club chairs, with Camilla next to the Princess Royal, then Vice Admiral Sir Timothy Laurence, then the Duke of York and then the Earl and Countess of Wessex in the front row of the south lantern.
Across the aisle was the Prince of Wales, the Princess of Wales, Prince George and Princess Charlotte, and then Peter Phillips and Zara and Mike Tindall.
Directly behind the King was the Duke of Sussex with the Duchess of Sussex behind Camilla. Meghan sat next to Princess Beatrice.
US President Joe Biden was 14 rows back on the south transept behind the Polish leader and in front of the Czech Republic. The First Lady was next to Switzerland's representative.
Other heads of state including French President Emmanuel Macron were also in the abbey, while senior British politicians including Prime Minister Liz Truss, Labour leader Sir Keir Starmer and former prime ministers Boris Johnson, David Cameron and Theresa May were among those taking their seats.
The funeral was broadcast live at around 125 cinemas and several cathedrals in the UK, and on a big screen in Holyrood Park in front of the Palace of Holyroodhouse, Edinburgh.
The Queen's coffin, followed by the King, the Prince of Wales, the Duke of Sussex, Duke of York and the Princess Royal, began its procession towards Wellington Arch after it was placed back onto the State Gun Carriage.
The route was lined by the armed forces from Westminster Abbey to the top of Constitution Hill at the Commonwealth Memorial Gates.
Mounties of the Royal Canadian Mounted Police led the procession followed immediately by representatives of the George Cross foundations from Malta, the former Royal Ulster Constabulary, and four representatives from the NHS.
Thousands lined South Carriage Drive to watch the hearse carrying the Queen's coffin - in some places the crowds were 30 people deep.
Ahead of the service, Mr Welby said: "We come together to give thanks for a long life, lived in service to her people and her saviour, Jesus Christ."
Later in the evening, there will be a private interment service with senior members of the royal family, where the Queen will be reunited with her beloved husband the Duke of Edinburgh.
The Queen's final resting place will be the King George VI memorial chapel, an annex to the main chapel where her mother and father were buried, along with the ashes of her sister, Princess Margaret.
Philip's coffin will move from the royal vault to the memorial chapel to join the Queen's.
