Queen Charles’s son, the former Prince of Wales, is now His Majesty King Charles III.
His eldest son, William, will now inherit his title of Duke of Cornwall, although he will not yet become Prince of Wales. Prince Harry will remain Duke of Sussex.
The long-time heir to the British throne became king the moment his mother died yesterday, something that was demonstrated in the statement announcing his death:
The queen died peacefully at Balmoral this afternoon. The King and Queen Consort will remain at Balmoral tonight and return to London tomorrow.
Later in the evening, the new King issued his own statement expressing his sorrow at her passing:
“The death of my beloved mother, Her Majesty the Queen, is a moment of deepest sadness for me and all members of my family.
“We deeply regret the death of a dear Sovereign and a very dear Mother. I know the loss of him will be deeply felt throughout the Country, the Realms and the Commonwealth, and by countless people around the world.
“During this period of mourning and change, my family and I will be comforted and sustained by our knowledge of the respect and deep affection in which the Queen was held.”
Charles is understood to make a longer public statement today as he prepares to be formally named king at a ceremony outside the Accession Council in London.
The new sovereign was with his mother, along with his sister, Princess Anne, when the monarch died Thursday afternoon at his Scottish castle in Balmoral. Other members of the royal family rushed to be there, but did not arrive until later.
Charles’s wife, Camilla, has become Queen alongside him, with her official title of Queen Consort. Although for many years Camilla was not expected to become queen, after the scandal of the divorce of Charles from Diana and, in particular, after the death of the latter in 1997, one of the last public acts of Queen Elizabeth was to express his wish that Camilla receive the title, in recognition of her longstanding support of the monarchy.