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 of 258 academics who specialised in 20th-century British history and/or politics. There were 139 replies to the survey, a return rate of 54%—by far the most extensive survey done so far. The respondents were asked, among other historical questions, to rate all the 20th-century prime ministers (PM) in terms of their success and asking them to assess the key characteristics of successful PMs. Respondents were asked to indicate on a scale of 0 to 10 how successful or unsuccessful they considered each PM to have been in office (with 0 being highly unsuccessful and 10 highly successful). A mean of