Records of Prime Ministers of the United Kingdom transitions between reigns, eight Prime Ministers each served under two sovereigns: George III had 14 Prime Ministers serving during his 59-year reign (reigned 1760–1820), beginning with the Duke of Newcastle. The last incumbent, Lord Liverpool, was the only one appointed by his son (the Prince Regent) during the father's final incapacity to rule. In downward numerical order, numbers of Prime Ministers in office during other reigns are: Only six Prime Ministers came to serve office under sovereigns in whose own reigns they were born. The present Prime Minister, Theresa May, is the third Prime Minister to have been born in
Records of Prime Ministers of the United Kingdom one former Prime Minister has been alive: The most living former Prime Ministers at any one time has been five, which has happened several times: the first time was between January and November 1770 (while Lord North was in office) and Lord Bute, George Grenville, Lord Rockingham, Pitt the Elder and the Duke of Grafton were still alive (Grenville died in November 1770); from 1964 to 1965 (while Wilson was in office) with Clement Attlee, Sir Winston Churchill, Sir Anthony Eden, Harold Macmillan and Sir Alec Douglas-Home (Churchill died in January 1965); from April 1976 to January 1977 (while Callaghan