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
Lord Mayor of London Mayor of London has worn a Royal Livery Collar of Esses. However, the collar's origins are not royal, Sir John Alleyn, thrice Lord Mayor, having bequeathed it to the next Lord Mayor and his successors "to use and occupie yerely at and uppon principall and festivall dayes." It was enlarged in 1567, and in its present shape has 28 Esses (the Lancastrian ‘S’), Tudor roses and the tasselled knots of the Garter (alternating) and also the Portcullis, from which hangs the Mayoral Jewel. The collar is worn over whatever the Lord Mayor may be wearing, secured onto their underdress or