The premiership of Tony Blair began on 2 May 1997 and ended on 27 June 2007. Whilst serving as Prime Minister of the United Kingdom, Blair concurrently served as the First Lord of the Treasury, the Minister for the Civil Service, the Leader of the Labour Party (until Gordon Brown was declared Labour leader on 24 June 2007), and a member of parliament for the constituency of Sedgefield in County Durham. He remains a Privy Counsellor having first been appointed in July 1994 when he became Leader of the Opposition. Tony Blair is the Labour Party's longest-serving Prime Minister, and having led the party to three consecutive general election victories, the only Labour prime minister to serve two full consecutive terms.