New Labour is the name given to the period in the history of the British Labour Party from the mid to late 1990s until 2010 under the leadership of Tony Blair and Gordon Brown. The name dates from a conference slogan first used by the party in 1994, later seen in a draft manifesto which was published in 1996 and titled New Labour, New Life for Britain. It was presented as the brand of a newly reformed party that had altered Clause IV and endorsed market economics. The branding was extensively used while the party was in government between 1997 and 2010. New Labour was influenced by the political thinking of Anthony Crosland and the leadership of Blair and Brown as well as Peter Mandelson and Alastair Campbell's media campaigning. The political philosophy of New Labour was influenced by the party's development of Anthony Giddens' Third Way which attempted to provide a synthesis between capitalism and socialism. The party emphasised the importance of social justice, rather than equality, emphasising the need for equality of opportunity and believed in the use of markets to deliver economic efficiency and social justice.

Sir Anthony Charles Lynton Blair is a British politician who served as Prime Minister of the United Kingdom from 1997 to 2007 and Leader of the Labour Party from 1994 to 2007. He served as Leader of the Opposition from 1994 to 1997 and held various shadow cabinet posts from 1987 to 1994. Blair was Member of Parliament (MP) for Sedgefield from 1983 to 2007. He is the second-longest-serving prime minister in post-war British history and the longest-serving Labour politician to have held the office.