Who was the oldest person to be appointed Prime Minister of the UK?
Records of Prime Ministers of the United Kingdom reigns of Victoria, Edward VII, George V, Edward VIII, George VI and Elizabeth II. The youngest Prime Minister to be appointed was William Pitt the Younger on 19 December 1783 at the age of 24 years, 6 months and 21 days. The oldest Prime Minister to be appointed for the first time was Lord Palmerston on 6 February 1855 at the age of 70 years, 3 months and 17 days. The oldest Prime Minister to be appointed overall, and oldest to win a General Election, was William Ewart Gladstone, who was born on 29 December 1809 and appointed for the
Prime Minister of Australia prime minister, otherwise William McMahon63. Robert Menzies was the oldest person to ever be prime minister, leaving office at 71 years old. The longest-serving Prime Minister was Sir Robert Menzies, who served in office twice: from 26 April 1939 to 28 August 1941, and again from 19 December 1949 to 26 January 1966. In total Robert Menzies spent 18 years, 5 months and 12 days in office. He served under the United Australia Party and the Liberal Party respectively. The shortest-serving Prime Minister was Frank Forde, who was appointed to the position on 6 July 1945 after the death of