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
Records of Prime Ministers of the United Kingdom Commons MP, when known as Lord John Russell (as younger son of a Duke of Bedford) in 1846–52, and his second and last entirely as a member of the Lords as the 1st Earl Russell in 1865–66, having been raised to the peerage between terms in 1861. Without counting Lord Russell, eighteen Prime Ministers served their entire terms from the House of Lords where they were already members, chronologically: <nowiki>*</nowiki> These five Prime Ministers never served in the House of Commons during their political careers. Three Prime Ministers were elevated from the Commons to the House of Lords during their