Alexander Boris de Pfeffel Johnson Hon FRIBA born 19 June 1964) is a British politician, writer, and former journalist serving as Prime Minister of the United Kingdom and Leader of the Conservative Party since 2019. He was Foreign Secretary from 2016 to 2018 and Mayor of London from 2008 to 2016. Johnson was Member of Parliament for Henley from 2001 to 2008 and has been MP for Uxbridge and South Ruislip since 2015. Johnson identifies as a one-nation conservative.
Johnson was born in New York City to upper-middle class British parents, and was educated at Eton College, then at Balliol College, Oxford.
In 2015, Johnson was elected MP for Uxbridge and South Ruislip, stepping down as mayor the following year. In 2016, he became a prominent figure in the successful Vote Leave campaign for Brexit. He then served as Secretary of State for Foreign and Commonwealth Affairs under Theresa May's premiership – a post from which he resigned in criticism of May's approach to Brexit and the Chequers Agreement two years later. After May resigned in 2019, he was elected Conservative leader and appointed prime minister. In August 2019, Johnson controversially advised Queen Elizabeth II to prorogue Parliament from 10 September to 14 October; on 24 September this action was unanimously ruled to be unlawful and of no effect by the Supreme Court. Subsequently, in a snap general election in December 2019, Boris Johnson led the Conservative Party to their biggest victory since 1987, and biggest percentage vote share of any party since 1979. The UK is scheduled to leave the European Union on 31 January 2020, under the terms of Johnson's renegotiated Brexit withdrawal agreement.