Records of Prime Ministers of the United Kingdom of . From oldest to youngest: The most recent death of a former Prime Minister was that of Baroness Thatcher (served 1979–90) on 8 April 2013 (aged 87 years, 177 days). Seven Prime Ministers have died in office: Spencer Perceval is the only British Prime Minister to have been assassinated. Sir Robert Peel, Margaret Thatcher and John Major survived assassination attempts in 1843, 1984 and 1991 respectively. Sir Henry Campbell-Bannerman and Bonar Law each resigned during their respective final illnesses. Law died five months after his resignation, but Campbell-Bannerman lived only another 19 days, dying at 10 Downing Street, the
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