Members of the public, some in tears, have been filing past the coffin of Britain's Queen Elizabeth II as it lies in state in London's Westminster Hall.
A queue several kilometres long snaked through the British capital as mourners braved hours of waiting to pay their respects to the late monarch before her funeral on Monday.
Hundreds of thousands of people are expected to file past the coffin in the coming days, before the state funeral on Monday morning.
Earlier, there was a short service in Westminster Hall attended by members of the extended royal family.
The coffin was then brought from Buckingham Palace to to Westminster Hall. In the ceremonial procession, a gun carriage that had borne the coffins of Queen Elizabeth's mother and father carried the late monarch to Westminster Hall - a procession through the heart of London watched by tens of thousands who lined the route.
Funeral marches played by military bands added to the solemn mood that left some mourners weeping, while others held up their camera phones to record the historic moment.
The UK's King Charles III led the royal family as they walked behind the coffin, draped with a Royal Standard and adorned with the Imperial State Crown, and pulled on a gun carriage of The King's Troop Royal Horse Artillery.
Thousands of mourners flocked to see the sight of the queen departing the official residence where she spent so much of her life, with viewing areas declared full ahead of the procession starting.
The new monarch walked in line with the Princess Royal, the Duke of York and the Earl of Wessex.
Behind the king were the queen's grandsons in a line - Peter Phillips, Harry the Duke of Sussex and William the Prince of Wales - who were followed by the late monarch's son-in-law Vice Admiral Tim Laurence, the Duke of Gloucester, the queen's cousin, and her nephew the Earl of Snowdon.
Royal family members saluted as they made their way past the Cenotaph while Harry bowed his head.
Shortly after the arrival of the coffin at Westminster Hall, US President Joe Biden said he had spoken to King Charles today to offer his condolences on the death of his mother.
At the Palace of Westminster a service lasting around 20 minutes was led by the Archbishop of Canterbury accompanied by the Dean of Westminster.
During the service, the senior royals stood in formation facing the coffin on its purple-covered catafalque, which was flanked with a tall, yellow flickering candle at each corner of the wide scarlet platform.
Mourners had already joined the queue early this morning to attend the queen's lying in state, which began at 5pm. It will continue until 6.30am on Monday, the day of the queen's funeral.
UK government guidance says the queue is expected to be very long, with people standing for "many hours, possibly overnight" and with very little opportunity to sit down.
There were emotional scenes yesterday evening when the late queen was brought back to London by plane and taken to Buckingham Palace for the final time.
As the hearse carrying the coffin began its journey from Northolt in northwest London, people stood silently by the road with some recording the historic moment on their phones.
The queen's grandchildren were among members of the royal family paying their respects to the late monarch by witnessing her coffin's arrival at the palace.
William and Harry put on a united front with their wives during a walkabout on Saturday.
The brothers have a well-documented troubled relationship but the death of their grandmother saw them unexpectedly come together when they viewed floral tributes left to the late queen at Windsor Castle.
William, Kate, Harry and Meghan arrived in the same vehicle and greeted well-wishers for around 40 minutes before William hopped into the driver's seat of the car with his wife in the passenger seat, and his brother and sister-in-law in the back.
In his televised address to the nation on Friday evening, the king talked of his love for Harry and Meghan, saying: "I want also to express my love for Harry and Meghan as they continue to build their lives overseas."
Then in Harry's tribute to his grandmother he said he wanted to honour his father at the start of his reign as King.
The last time Charles and his two sons were all seen together in public was at the service of thanksgiving for the queen in St Paul's Cathedral during the Platinum Jubilee celebrations in June.
But on that occasion, Harry and Meghan were seated some distance from Charles and William on the other side of the aisle in the second row, behind the Wessex family and the Duke and Duchess of Gloucester.
The Jubilee service at St Paul's was Harry and Meghan's first public appearance alongside the royal family since they stepped down as senior royals in 2020.
