High Quality Content by WIKIPEDIA articles! The Premiership of Gordon Brown began on 27 June 2007, when Brown accepted the Queen`s invitation to form a government, replacing Tony Blair as the Prime Minister of the United Kingdom, and ended with his resignation as Prime Minister on 11 May 2010. While serving as Prime Minister, Brown also served as the First Lord of the Treasury, the Minister for the Civil Service and the Leader of the Labour Party. He was succeeded by David Cameron.