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 been military generals: Lord Shelburne, Prime Minister in 1782–83, who was promoted from Lieutenant-General to full General in the British Army in the latter year, and the Duke of Wellington, who achieved the supreme rank of Field Marshal in 1813. He was Prime Minister twice, in 1828–30 and 1834, in the interval between his two terms as Commander-in-Chief of the Forces. During his military career he took part in some 60 battles, seeing more wartime combat than any other future Prime Minister. No future Prime Ministers have yet served in the flying services, although Neville Chamberlain, Prime Minister in 1937–40,