Records of Prime Ministers of the United Kingdom of . From oldest to youngest: The most recent death of a former Prime Minister was that of Baroness Thatcher (served 1979–90) on 8 April 2013 (aged 87 years, 177 days). Seven Prime Ministers have died in office: Spencer Perceval is the only British Prime Minister to have been assassinated. Sir Robert Peel, Margaret Thatcher and John Major survived assassination attempts in 1843, 1984 and 1991 respectively. Sir Henry Campbell-Bannerman and Bonar Law each resigned during their respective final illnesses. Law died five months after his resignation, but Campbell-Bannerman lived only another 19 days, dying at 10 Downing Street, the
Records of Prime Ministers of the United Kingdom the reign of the present sovereign Queen Elizabeth II. King George III (reigned 1760–1820) Queen Victoria (reigned 1837–1901) Queen Elizabeth II (acceded 1952) <nowiki>*</nowiki> Perceval was assassinated in 1812. His is the only complete lifetime lived by a Prime Minister under a single sovereign. Both Robert Walpole (1676–1745) and Lord Wilmington ( 1673–1743) lived under the reigns of the same six sovereigns: Charles II, James II, William III and his joint sovereign Mary II, Queen Anne, George I and George II. Sir Winston Churchill (1874–1965), Clement Attlee (1883–1967), Anthony Eden (1897–1977) and Harold Macmillan (1894–1986) all lived under the six