Records of Prime Ministers of the United Kingdom the middle name until the 1980s.) The richest Prime Minister was Lord Derby, with a personal fortune of over £7 million (about £444 million in today's money). The poorest was William Pitt the Younger, who was £40,000 (now over £1 million) in debt by 1800. Three Prime Ministers ultimately died as a result of accidents: Records of Prime Ministers of the United Kingdom The article lists the records of Prime Ministers of Great Britain and of the United Kingdom since 1721. The Prime Minister with the longest single term was Sir Robert Walpole, lasting 20 years and 315 days from
Historical rankings of Prime Ministers of the United Kingdom Historical rankings of Prime Ministers of the United Kingdom "The Times" constructed a poll for the first time of all British prime ministers in the lead-up to the 2010 general election. Before this there were two polls in 1999 and 2000, carried out by BBC Radio 4 and the British Politics Group—both consulted only a relatively small number of experts. A wider-reaching poll was conducted in 2004 by the University of Leeds and Ipsos MORI. All rankings involved only prime ministers from the 20th and 21st centuries. In 2004, the University of Leeds and Ipsos Mori conducted an online survey