Before
World War II, while a minister was occasionally invited to deputise as prime minister when the prime minister was ill or abroad, no one was styled as such when the prime minister was in the country and physically able to run the government. This changed in 1942 when
Clement Attlee was styled as deputy prime minister by
Winston Churchill. This designation was seen as an exceptional result of a coalition and the war, and Attlee's 1942 appointment was not formally approved by the
King and was a matter of form rather than fact. The designation was because Churchill wanted to demonstrate the importance of the
Labour party in the coalition, not for any reasons relating to succession; he actually left written advice that the King should send for
Anthony Eden if he were to die, not Attlee. Unusually in comparison to other unofficial deputy prime ministers, Clement Attlee was described as deputy prime minister by
Hansard, whereas other unofficial deputies are described using their official position. under
David Cameron, and served in this role until he resigned after the Conservatives won a majority in the
2015 general election. During the coalition
William Hague was appointed by Cameron as
First Secretary of State, the only time that both these positions have existed concurrently but not been held by the same person. During this time Cameron described Hague rather than Clegg as being his 'de facto political deputy'. making him the first non-consecutive holder of the office. Raab resigned in April 2023 after the investigation into his alleged bullying was published, and was succeeded by deputy prime minister
Oliver Dowden, who resigned after the
2024 general election, whereupon he was replaced by
Angela Rayner in
Keir Starmer's Labour
government. Following a cabinet reshuffle in September 2025,
David Lammy would replace Rayner as the Deputy Prime Minister, becoming the first person of colour to hold the position. ==Office and residence==