Jackie Ashley presents a special edition of Politics Weekly from City Hall.
Comment is Free blogger Dave Hill, and the Guardian's correspondent Huir Muir contemplate what Boris Johnson will be like as London's mayor.
The Guardian's sketch writer Simon Hoggart asks whether Ken and Boris's policies were really that different.
Steve Norris, who was the official Conservative candidate for Mayor of London in 2000 and 2004 against Ken Livingstone, ponders whether he would have won if he had stood this time.
The Guardian's Jonathan Freedland and Tessa Jowell MP discuss the wider implications for the Labour party.
