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 Hungary Revolution of 1848 he was executed 1 year and 4 days later, on 6 October 1849. The shortest lived after office premier who died in natural causes was Kálmán Darányi. He left the office on 14 May 1938 and died on 1 November 1939. Three Prime Ministers have died in office: Six Prime Ministers were executed; all of them after leaving office. Records of Prime Ministers of Hungary Records of Prime Ministers of Hungary from 1848 to the present. The Prime Minister with the longest single term was Count Kálmán Tisza, lasting 14 years and 144 days from 20 October