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
Timeline of Prime Ministers of the United Kingdom Leburn. Timeline of Prime Ministers of the United Kingdom This is a graphical timeline of Prime Ministers of the United Kingdom from when the first Prime Minister in the modern sense, Robert Walpole, took office in 1721, until the present day. This timeline shows most of the early life, the political career and death of each Prime Minister of the United Kingdom from 1846. The first Prime Minister was Robert Walpole in the early 18th century . Unlike countries where the leader is elected directly to the highest political office of a separate executive, the Prime Minister must first establish