Boris Johnson (born New York, 1964) was Mayor of London until May 8, 2016. He leaves as a fierce critic in support of the Brexit campaign to leave the EU. In 2008 he was elected to the post of Mayor of London, defeating the incumbent mayor, Ken Livingstone. Johnson is succeeded by Sadiq Khan, the first Muslim Mayor of any European capital.
Boris Johnson's campaign for Mayor of London from the Conservative Party was in a majority Labour party dominated region. Johnson promised during the campaign that he would roll back a recent expansion of Central London congestion charging Livingstone had introduced.. He also advocated the removal of articulated, or "bendy", buses that had been introduced to London. He also called for minor changes to law and order in London in the form of a ban on drinking alcohol on public transport (the London Underground in particular)  and the revocation of free travel for youths who misbehave on buses and trains. Boris Johnson announced during the 2008 US presidential campaign that he favoured an Obama victory.
Johnson was born in the New York City. He no longer claims US citizenship because he chose to renounce it following trouble entering the US on his British passport. However, he did not clarify whether he had ever formally renounced his US citizenship before a US consular officer and it is uncertain whether he remains a citizen under US law.