Mayor of London the winner hours earlier. Mr Sadiq Khan, a member of the Labour party, is the first Muslim to be elected Mayor of London. Incumbent Mayor Boris Johnson did not run for re-election for a third term in office, as he had been elected the Member of Parliament for the Conservative Party in Uxbridge and South Ruislip in the 2015 General Election. Most powers are derived from the Greater London Authority Act 1999, with additional functions coming from the Greater London Authority Act 2007, the Localism Act 2011 and Police Reform and Social Responsibility Act 2011. The main functions are: The
Mayor of London Greater London Authority Act 1999 in 2000 as part of the reforms. The Mayor is elected by the supplementary vote method for a fixed term of four years, with elections taking place in May. As with most elected posts in the United Kingdom, there is a deposit, in this case of £10,000, which is returnable on the candidate's winning at least 5% of the first-choice votes cast. The most recent London mayoral election was held on 5 May 2016. The results were announced officially on 7 May at 00:30; British television news channel Sky News had announced Sadiq Khan as