Alexander Boris de Pfeffel Johnson (born 19 June 1964) is a British politician, writer, and former journalist who has served as Prime Minister of the United Kingdom and Leader of the Conservative Party since July 2019. He has been Member of Parliament (MP) for Uxbridge and South Ruislip since 2015 and was MP for Henley from 2001 to 2008. He also served as Mayor of London from 2008 to 2016 and Foreign Secretary from 2016 to 2018. Johnson identifies as a one-nation conservative.

Johnson was Mayor of London from 4 May 2008 – 9 May 2016. He resigned as an MP and in 2008 he was elected Mayor of London, and was re-elected in 2012. During his mayoralty, he banned alcohol consumption on much of London's public transport, oversaw the 2012 Summer Olympics, and introduced the New Routemaster buses, cycle hire scheme, and Thames cable car.

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