Sworn in at a ceremony in Ottawa on Friday, Mr Carney pledged his loyalty to Charles, who is also the King of Canada, and later lauded Canada's "proud British heritage" in his address.

King Charles met with Canadian Prime Minister Justin Trudeau at Sandringham on Monday morning. The private audience took place at the monarch's Norfolk estate. Mr Trudeau flew to London for the meeting following his attendance at an emergency defence summit of European leaders over the weekend.

Justin Trudeau visited Gov. Gen. Mary Simon this morning and formally resigned as prime minister. Mark Carney will be sworn in as Canada's 24th prime minister at Rideau Hall at 11 a.m., where he will also reveal his first cabinet.