Rishi Sunak has been appointed Prime Minister by the King after he accepted the resignation of Liz Truss after just 49 days in office.
The new Conservative leader was invited to form a government by Charles when they met at Buckingham Palace on Tuesday after Ms Truss departed as the shortest-serving prime minister in history.
Mr Sunak, 42, is the UK’s first Hindu PM, the first of Asian heritage and the youngest for more than 200 years.
The former chancellor was expected to address the nation from Downing Street shortly after leaving the palace.