Onlookers cheer King Charles III in London

Well-wishers in London cheered as Britain's King Charles III left Buckingham Palace in a motorcade on Sunday. Charles, even as he mourned his late mother, got to work at Buckingham Palace, meeting with the secretary-general and other representatives of the Commonwealth.

Meanwhile, Queen Elizabeth II's coffin was taking a circuitous journey back to the capital. After leaving Balmoral Castle, it was driven slowly to Edinburgh where it will rest overnight at the Palace of Holyrood house. After it is flown to London on Tuesday, the coffin will be moved from Buckingham Palace on Wednesday to the Houses of Parliament to lie in state until a state funeral at Westminster Abbey on Sept. 19.