Charles III became King of the United Kingdom and of 14 other Commonwealth realms upon the death of his mother, Queen Elizabeth II, on 8 September 2022. Royal succession in the realms occurs immediately upon the death of the reigning monarch. The formal proclamation in Britain occurred on 10 September 2022 at 10:00 BST, the same day on which the Accession Council gathered at St James's Palace in London. The other realms, including most Canadian provinces and all Australian states, issued their own proclamations at times relative to their time zones, following meetings of the relevant privy or executive councils. While the line of succession is identical in all the Commonwealth realms, the royal title as proclaimed is not the same in all of them.

United Kingdom

The proclamation occurred on 10 September 2022 at 10:00 am BST at St James's Palace in London. Although all 700 members of the Privy Council were eligible to attend the Accession Council, only 200 were summoned due to limitations of space.

Out of the King's presence, the Lord President of the Council had the clerk of the Council read the Accession Proclamation. In addition to announcing the accession and pledging loyalty, it formally introduced the King's new regnal name, Charles III. The proclamation was signed by Queen Camilla, the new queen consort; Prince William, the new Prince of Wales; Justin Welby, the archbishop of Canterbury; Brandon Lewis, the lord chancellor; Stephen Cottrell, the archbishop of York; the Duke of Norfolk, the earl marshal; Penny Mordaunt, the lord president; and Liz Truss, the prime minister. The lord president then read the orders of council on issues dealing with the public proclamations and gun salutes at Hyde Park and the Tower of London.

The Privy Council was then summoned to attend the King for the second part of the council, where he delivered a personal address regarding the Queen's death. He took an oath to preserve the independence of the Church of Scotland, which was reaffirmed by signing two documents as Queen Camilla and the Prince of Wales witnessed his signature. At the conclusion of the ceremony, privy counsellors signed the proclamation. A minor incident during the signing, in which the King showed visible frustration at there being too many items on his under-sized table, went viral online.

Charles III's Accession Council was the first to be televised and the first to be streamed online. At 11:00 am, 21-gun salutes at the Tower of London, Cardiff Castle, Edinburgh Castle, Castle Cornet in Guernsey, Gibraltar, and naval bases and stations at sea marked the accession of Charles III. After the proclamation ceremony, the King greeted crowds outside Buckingham Palace.

When the Parliament of the United Kingdom met, members swore allegiance to the new king and expressed condolences for the late Queen's death. Most parliamentary activities were suspended for 10 days. At 3:30 pm, the King hosted the prime minister and the cabinet for an audience. On the same day, the proclamation of the accession was issued by the devolved governments of Scotland, Wales, and Northern Ireland.

Text of proclamation The following text, published as a supplement to The London Gazette of 12 September, was read by the clerk of the Accession Council, Richard Tilbrook:

The proclamation was read by the Garter King of Arms, David White, at 11:00 am from the Proclamation Gallery of Friary Court in St James's Palace, then by the Clarenceux King of Arms, Timothy Duke, at the Royal Exchange in the City of London. Flags flew at full-mast at 11:00 am on Saturday as the proclamation was being read, before being returned to half-mast until the day of the Queen's funeral. Several services were held across the UK on the same day and the day after, during which the proclamation was read by local officials.Proclamations across the country:

As in past proclamations, before the traditional three cheers, the ceremony in the areas around the Tower of London had the following response by personnel of the Yeomen Warders after the proclamation was read by the Resident Governor of the Tower of London and Keeper of the Jewel House, in a preview of the cheers to the Sovereign shouted from this point on in the traditional Ceremony of the Keys in the Tower:

Chief Warder: "God preserve King Charles III!" Warders: "Amen!"

Wales

The proclamation in Wales was held at Cardiff Castle on 10 September, with more than 2,000 people attending the ceremony. Guests included Members of the Senedd, Secretary of State for Wales Robert Buckland, and other officials. The ceremony was officiated by First Minister Mark Drakeford, who first had the Wales Herald, Thomas Lloyd, read the proclamation in English, and then had the Lord Lieutenant of South Glamorgan, Morfudd Meredith, read it in Welsh.

The proclamation in Welsh reads:

Northern Ireland

The proclamation in Northern Ireland was held at the Hillsborough Castle in Royal Hillsborough on 11 September at 12:00 noon. It was read out by Robert Noel, Norroy and Ulster King of Arms. Attendees included Secretary of State for Northern Ireland Chris Heaton-Harris, Minister of State for Northern Ireland Steve Baker, Democratic Unionist Party leader Jeffrey Donaldson, and Alliance party leader Naomi Long. While Sinn Féin stayed away and attended a rally in Belfast for victims of The Troubles instead, the party said it would attend other official events during the period of mourning.

Scotland

The proclamation in Scotland was held at Mercat Cross, Edinburgh, on 11 September. The ceremony was attended by Scottish judges and politicians, including First Minister Nicola Sturgeon. It was read by Joseph Morrow, Lord Lyon King of Arms. A few attendees protested against the monarchy and booed as Morrow spoke.

On 12 September, the proclamation was read at in Stornoway, in both English and Scottish Gaelic.

The proclamation in Scottish Gaelic reads:

British Overseas Territories The Form of Proclamation for British Overseas Territories was set out in an Order in Council approved at the Accession Council.

Anguilla

The proclamation in Anguilla was held at the Government House in Old Ta at 11:00 am on 11 September and was read by Governor Dileeni Daniel-Selvaratnam.

Bermuda The proclamation in Bermuda took place in Front Street, Hamilton, on 11 September and was read by Governor of Bermuda, Rena Lalgie, in the presence of legislators and a crowd of Bermudians. The ceremony was accompanied by a march-past by the Royal Bermuda Regiment and a 21-gun salute over Hamilton Harbour to mark the closing of the proclamation shortly after 9 am local time.

British Antarctic Territory

The proclamation in the British Antarctic Territory, the largest and most southerly of the British overseas territories, was read by Commissioner Paul Candler via a video link from London on 12 September to Rothera Research Station on the Antarctic Peninsula.

British Indian Ocean Territory The proclamation in the British Indian Ocean Territory took place at the British Forces Headquarters in Diego Garcia on 11 September, and was read by Major Matt Adams of the Royal Marines on behalf of Commissioner Paul Candler.

British Virgin Islands The proclamation in the British Virgin Islands took place at the Government House in Road Town on 11 September and was read by Governor John Rankin, in the presence of Premier Natalio Wheatley, Deputy Governor David Archer Jr., and members of the House of the Assembly. After the proclamation, those in attendance said God Save the King, followed by a gun salute.

Cayman Islands The proclamation in the Cayman Islands took place at Government House in Grand Cayman, on 11 September at 9:00 am (local time) and was read by Governor Martyn Roper. It was accompanied by a 21-gun salute and a march past by contingents of the Royal Cayman Islands Police Service, Cayman Islands Regiment, Cayman Islands Coast Guard, Cayman Islands Fire Service, Cayman Islands Prison Service, Cayman Islands Cadet Corps, and its marching band.

Falkland Islands

The proclamation in the Falkland Islands was held at Government House in Stanley on the morning of 11 September and was read by Governor Alison Blake. The ceremony was attended by government officials, members of the Legislative Assembly, and representatives of British Forces South Atlantic Islands.

Gibraltar

The proclamation in Gibraltar took place at The Convent at 12:00 noon on 11 September. It was read by Governor David Steel, who was joined by the political, civic, and religious leaders of the territory. A 21-gun salute was fired after the ceremony by the Royal Gibraltar Regiment from Devil's Gap Battery.

Montserrat

The proclamation in Montserrat took place at Salem Park at 7:55 am (local time) on 11 September and was read by Governor Sarah Tucker. It was followed by a rendition of God Save the King, a 21-gun salute, and three cheers for King Charles III.

Pitcairn Islands

The proclamation in Pitcairn Islands, one of the smallest British overseas territories, took place at the town hall in Adamstown on 11 September. It was read by Governor Iona Thomas via a video link from Wellington, New Zealand.

Saint Helena, Ascension and Tristan da Cunha

The proclamation in Saint Helena, Ascension and Tristan da Cunha took place at the Saint Helena Supreme Court in Jamestown at 10:30 am on 11 September. It was read by Governor Nigel Phillips.

South Georgia and the South Sandwich Islands

The proclamation in South Georgia and the South Sandwich Islands was read by Commissioner Alison Blake via a video link from Government House in Stanley, Falkland Islands, on 11 September to overwintering teams at King Edward Point and Bird Island.

Sovereign Base Areas of Akrotiri and Dhekelia

The proclamation in the Sovereign Base Areas of Akrotiri and Dhekelia took place at Episkopi Cantonment on 11 September and was read by the Administrator Peter J. M. Squires.

Turks and Caicos Islands

The proclamation in the Turks and Caicos Islands was held at Waterloo in Grand Turk Island on 11 September at 11:00 am and was read by Governor Nigel Dakin.

Crown Dependencies Bailiwick of Guernsey

The proclamation in the Bailiwick of Guernsey was held in Guernsey, Alderney, and Sark at 12:00 noon BST on 11 September.

In Guernsey, a special sitting of the States of Guernsey was held at 11 am when the Bailiff of Guernsey, Richard McMahon, read the proclamation. The ceremony was attended by Lieutenant Governor Richard Cripwell, members of the clergy, and government officials. A procession from St James to the Crown Pier by the Corps of Drums of Elizabeth College then took place. After a fanfare trumpet, the Sheriff of Guernsey, Jason Savident, publicly read the proclamation. This was followed by the attendees shouting "Dieu Sauve Le Roi" and a 21-gun salute from Castle Cornet. Cripwell then led the three cheers for Charles III.

In Alderney, the proclamation was read by William Tate, the president of the States of Alderney, at the Court House. This was followed by a public proclamation at the Island Hall. In Sark, a sitting of the Chief Pleas was held before the proclamation was read by Kevin Adams, the Prévôt of Sark, outside St Peter's Church.

Isle of Man On 11 September, Lieutenant Governor John Lorimer proclaimed Charles III as the Lord of Mann during a ceremony at Government House in Onchan at 12:00 noon. A second ceremony took place on 16 September on Tynwald Hill in St John's, where the accession of Charles III was also proclaimed in the Manx language by Lorimer. Both ceremonies were attended by Chief Minister Alfred Cannan and the President of Tynwald, Laurence Skelly.

The proclamation in English reads:

Jersey