David White, Garter King of Arms, proclaimed the Accession of His Majesty King Charles III at St James's Palace, London, on 10 September 2022. Information about the Proclamation of the new Sovereign by the heralds may be seen here. The text of the Accession Proclamation has been published here, and can be downloaded as a PDF.
The Accession Proclamation was made in Scotland. Wales and Northern Ireland by other Officers of Arms: Lord Lyon King of Arms read it in Edinburgh; Wales Herald in Cardiff; and Norroy and Ulster King of Arms read it in Hillsborough.