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.

Former central banker Mark Carney is now the prime minister of Canada after being sworn into office in Ottawa. Carney, who has never held office as an elected official, swore an oath of allegiance to King Charles III on Friday at Rideau Hall before jointly signing his official appointment with Governor-General Mary Simon.

Mr Carney paid tribute to Canada’s ‘proud British heritage’ in a speech after he was sworn in as the country’s new prime minister.