The Queen’s coffin is lying in state at Westminster Hall for the third day, ahead of her state funeral on Monday 19 September.
The hall is open 24-hours-a-day until Monday morning for members of the public to file past the coffin and pay their respects.
Huge queues have formed in central London. People who wish to pay their respects virtually can watch a dedicated BBC live stream.
Here is your guide to what will happen, day by day.
Today is the third full day that the Queen’s coffin will lie in state in Westminster Hall, where she will remain until the morning of the funeral.
Hundreds of thousands of mourners are expected pay their respects in the 11th Century building, the oldest part of the Palace of Westminster.
There is a huge queue which is snaking along the South Bank, past the National Theatre, the Tate Modern and HMS Belfast, through to Southwark Park.
The UK government has published a live queue tracker for people to follow on YouTube. And if you have questions about what to bring and what you can’t take in, read our guide to attending lying in state.
Members of the public are able to walk past the Queen’s closed coffin, which rests on a raised platform, known as a catafalque.
Later today, the Queen’s grandchildren, including the Prince of Wales and the Duke of Sussex, will observe a 15-minute vigil on Saturday in Westminster Hall.
At King Charles’ request, Princes William and Harry will both wear military uniform for the occasion.
The brothers will be joined by Peter Phillips, Zara Tindall, Princesses Beatrice and Eugenie, Lady Louise Windsor, and James, Viscount Severn.
The Prince of Wales will stand at the head of the Queen’s coffin, while the Duke of Sussex will stand at the foot.
The Queen’s coffin will lie in state for the fourth full day in Westminster Hall.
A one-minute silence will be held across the UK at 20: 00 BST. People can mark the silence privately in their own homes, on the street with neighbours or at community events and vigils.
Monday is the day of the Queen’s state funeral. It is a bank holiday in the UK.
The Queen’s lying-in-state will end at 06: 30, and the doors to Westminster Abbey will open ahead of the funeral at 08: 00.
At 10: 44, the coffin will be taken in procession from the Palace of Westminster to Westminster Abbey in the State Gun Carriage of the Royal Navy.
The carriage was last seen in 1979 for the funeral of Prince Philip’s uncle, Lord Mountbatten, and it will be drawn by 142 sailors from the Royal Navy.
King Charles III will walk behind, with the Princess Royal, the Duke of York and Earl of Wessex. Behind them will be the Queen’s grandsons, the Prince of Wales, the Duke of Sussex and Peter Phillips.
The procession will be led by a massed Pipes & Drums of Scottish and Irish Regiments, the Brigade of Gurkhas, and the Royal Air Force – numbering 200 musicians.
The Queen’s coffin will arrive at the Abbey at 10: 52. The state funeral will begin at 11: 00.
At around 11: 55, the Last Post will sound, followed by a national two-minute silence to be observed in the Abbey and throughout the UK. Reveille, the national anthem and a lament played by the Queen’s piper will bring the state funeral service to an end at around 12: 00.
Among the 2,000 guests will be members of her family, senior UK politicians and heads of state from across the world, and representatives from the charities she supported.
Following the service, the coffin will travel in procession from Westminster Abbey to Wellington Arch. The King and senior royals will walk behind the coffin.
Camilla, the Queen Consort, the Princess of Wales, the Duchess of Sussex and the Countess of Wessex will follow the procession by car. Big Ben will toll at one-minute intervals.
From there it will be taken by hearse to Windsor. Shortly after 15: 00, a state hearse will drive the coffin along Long Walk to St George’s Chapel, Windsor Castle.
A committal service will then begin at 1600. After that, the Queen’s coffin will be laid in the Royal Vault, beside her husband, the late Duke of Edinburgh, who died in April 2021.
Later in the day, in a private service, the coffin will be interred at the King George VI memorial chapel, inside St George’s Chapel.