Lady Victoria held hands with Sir Keir as they walked out of the front door together before she moved to the side to stand with ministerial allies and staff.

One Labour MP, who is usually considered to be a loyalist to the prime minister, said he believed Starmer would announce his departure date as soon as Monday.

UK Prime Minister Keir Starmer has resigned as prime minister and leader of the Labour Party in a statement delivered outside 10 Downing Street.