Historical rankings of Prime Ministers of the United Kingdom from his second term only. In 2013, a group of academic staff and students at Royal Holloway, University of London, conducted a postal survey of British Members of Parliament, asking them to evaluate the success of post-war British prime ministers. Some 158 MPs replied to the survey, a response rate of 24%. The respondents included 69 Conservatives, 67 Labour MPs, 14 Liberal Democrats and 8 MPs from other parties. The survey used the same question employed in the 2004 and 2010 University of Leeds studies: MPs were asked how successful or unsuccessful they considered each Prime Minister to have been
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