Boris Johnson is a British politician who served as Prime Minister of the United Kingdom from July 2019 to September 2022. A member of the Conservative Party, he previously served as Mayor of London from 2008 to 2016 and Foreign Secretary from 2016 to 2018. Johnson played a central role in the UK's withdrawal from the European Union, known as Brexit, and led the country through the early stages of the COVID-19 pandemic.