Gun salutes will be fired and church bells will be tolled on Friday as the UK pays tribute to Queen Elizabeth II.
Britain’s longest-reigning monarch died peacefully, surrounded by her family, at Balmoral in Scotland on Thursday.
King Charles III, who immediately succeeded his mother, is expected to address the nation for the first time as sovereign later.
There have been spontaneous gatherings and outpourings of emotion at Balmoral, Buckingham Palace and Windsor.
Members of the public have travelled to leave flowers, messages of thanks and condolence for the Queen and Royal Family, with many visibly tearful or overcome with emotion.
Union jacks are being flown at half mast and Parliament will gather later to pay tribute to her momentous reign.
The bells of St Paul’s Cathedral, Westminster Abbey and Windsor Castle are expected to toll at noon in tribute to her life and service.
A gun salute in London’s Hyde Park has been arranged for the following hour, with 96 rounds to mark each year of her life to fire around 13:00 BST.
There will be a remembrance service at St Paul’s at 18:00 BST, attended by Prime Minister Liz Truss and other senior ministers.
On Friday, the palace released some details of plans over the coming days, with King Charles declaring a period of Royal mourning be observed for seven days after the funeral of his mother.
There will be no physical book of condolences for members of the public to sign, but the palace has opened an online book of condolences for those who wish to leave messages.
The government has said it expects large crowds to gather in central London and other Royal Residences as a mark of respect, warning there could be some travel disruption, traffic delays and significant crowding,
Members of the public have been asked to leave their flower tributes in designated areas at Royal Residences.
Tributes to the Queen will also be paid by MPs and peers in the Houses of Commons and Lords from midday, with normal politics to be put on hold for a period of mourning which is due to last until late into Friday evening.
The Cabinet has met on Friday morning, with the only item on the agenda to pay tribute to the Queen.
There will also be a rare Saturday sitting of the House of Commons, where senior MPs will gather to take an oath of allegiance to the new King from 14:00, with condolences continuing again until the evening.