James Gordon Brown (born 20 February 1951) is the Prime Minister of the United Kingdom (together with the First Lord of the Treasury and the Minister for the Civil Service) and the leader of the Labour Party since 27 June 2007. Until then he served as Chancellor of the Exchequer under Tony Blair from 1997 and has been the Member of Parliament (for current Kirkcaldy and Cowdenbeath constituency) since 1983.