Jeremy Bernard Corbyn (; born 26 May 1949) is a British politician serving as Leader of the Labour Party and Leader of the Opposition since 2015. Corbyn was first elected Member of Parliament (MP) for Islington North in 1983. Ideologically, he identifies himself as a democratic socialist.
Born and raised in Wiltshire, Corbyn joined Labour as a teenager. Moving to London, he became a trade union representative. In 1974, he was elected to Haringey Council and also became Secretary of Hornsey Constituency Labour Party, until elected as the MP for Islington North in 1983. His activism has included roles in Anti-Fascist Action, the Anti-Apartheid Movement and the Campaign for Nuclear Disarmament, and advocating for a united Ireland. As a backbench MP, he frequently voted against the Labour whip, including "New Labour" governments under Tony Blair and Gordon Brown. He chaired the Stop the War Coalition from 2011 to 2015.
Corbyn was elected Labour leader in 2015. Taking the party to the left, he advocated renationalisation of public utilities and the railways, a less interventionist military policy, and reversals of austerity cuts to welfare and public services. After Labour MPs sought to remove him in 2016, he won a second leadership contest. Although critical of the European Union, he supported continued membership in the 2016 referendum. In the 2017 general election, Labour again finished as the second-largest party in parliament, but increased their share of the vote to 40%, resulting in a net gain of 30 seats and a hung parliament. Corbyn has been criticised in relation to allegations of antisemitism in the Labour Party and for alleged antisemitic associations prior to becoming leader. Corbyn has apologised and asserted his record of opposing antisemitism and his commitment to rooting it out in the party.