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
Records of Prime Ministers of the United Kingdom have both had immediate successors to die in office. The longest-married Prime Minister was James Callaghan who was married to his wife Audrey for 66 years from July 1938 until her death on 15 March 2005. Three Prime Ministers married while in office, all to second wives: The British Prime Minister widowed the shortest is James Callaghan, who died on 26 March 2005. His wife, Audrey Callaghan, died on 15 March 2005, only 11 days before him. Only two British Prime Ministers have been divorced: Only four British Prime Ministers were bachelors: At least 24 British Prime Ministers were related