Records of Prime Ministers of the United Kingdom combined with his first term (13 July 176530 July 1766) his total time in office was 1 year and 113 days, which exceeds the total periods of several other Prime Ministers. (The Duke of Wellington had also served as Prime Minister between 1828 and 1830.) Consequently, the Prime Minister with the total shortest period in office was George Canning, whose sole term lasted 119 days from 12 April 1827 until his death on 8 August 1827. The Prime Minister with the longest period between the start of their first appointment and the end of their final term was the Duke
Historical rankings of Prime Ministers of the United Kingdom Historical rankings of Prime Ministers of the United Kingdom "The Times" constructed a poll for the first time of all British prime ministers in the lead-up to the 2010 general election. Before this there were two polls in 1999 and 2000, carried out by BBC Radio 4 and the British Politics Group—both consulted only a relatively small number of experts. A wider-reaching poll was conducted in 2004 by the University of Leeds and Ipsos MORI. All rankings involved only prime ministers from the 20th and 21st centuries. In 2004, the University of Leeds and Ipsos Mori conducted an online survey