Architect of Labour's battle for London could set his sights on becoming Mayor of London

The architect of Labour's battle for London could now be pitched into a new contest in a bid to become Mayor of London.

Credit: PA

Tooting MP Sadiq Khan, who devised Labour's strategy in the capital, was hoping to become Justice Secretary in an Ed Miliband government.

But tonight's exit poll pointing to a disastrous night for Labour appeared to dash his cabinet ambitions.

Khan is now expected to enter Labour's contest to choose a candidate for the 2016 mayoral election.

The move would put him head to head with favourite, former Olympics minister Tessa Jowell and fellow MPs David Lammy and Diane Abbott.