was alive. Arthur Balfour — From the death of Lord Salisbury in August 1903 until the end of his term in December 1905, only Lord Rosebery was alive. Winston Churchill — In his second term, October 1951 to April 1955, only Clement Attlee was alive. Clement Attlee — From the death of Stanley Baldwin in November 1947 until the end of his term in October 1951, only Winston Churchill was alive. Most Following the resignation of Liz Truss in October 2022, there are currently seven living former prime ministers, which is the record for the number of living former prime ministers at any time. From oldest to youngest: May, Johnson, and Truss are still serving members of the House of Commons and of the governing Conservative Party. The most recent death of a former prime minister was that of Margaret Thatcher (term of office 1979–1990) on 8 April 2013 (aged 87). In the House of Commons The record for most prime ministers (current or former) to be members of the House of Commons at the same time is four, a sitting prime minister and three former prime ministers. This has occurred on five separate occasions: The fewest former prime ministers still sat in the House of Commons is zero, which has happened on a number of occasions, most recently between 12 September 2016 when David Cameron left Parliament and 24 July 2019 when Theresa May left office. Died in office Seven prime ministers have died in office: Lord Wilmington — died on 2 July 1743, aged 70 Henry Pelham — died on 6 March 1754, aged 59 Lord Rockingham — died on 1 July 1782, aged 52 William Pitt the Younger — died on 23 January 1806, aged 46; the youngest to die in office Spencer Perceval — was assassinated by John Bellingham on 11 May 1812, aged 49 George Canning — died on 8 August 1827, aged 57 Lord Palmerston — died on 18 October 1865, aged 80 (two days before his 81st birthday); the oldest to die in office 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 only prime minister ever to do so. Others who died within one year of the end of their term were the Duke of Portland who died in