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
Historical rankings of Prime Ministers of the United Kingdom the scores could then be calculated and a league table based on the mean scores. The five Labour prime ministers were, on average, judged to have been the most successful, with a mean of 6.0 (median of 5.9). The three Liberal PMs averaged 5.8 (median of 6.2) and the twelve Conservative PMs 4.8 (median of 4.1). In 2010, the University of Leeds and Woodnewton Associates carried out a survey of 106 academics who specialised in British politics or British history, to rank the performance of all 12 prime ministers who served between 1945 and 2010. Churchill's ranking was thus determined