Tory mayoral candidate Boris Johnson has claimed to have secured the services of Labour MP Kate Hoey should be win the battle to topple Ken Livingstone in Thursday's election.

According to a release from the Johnson campaign, Ms Hoey - a critic of Mr Livingstone's administration - has agreed to serve as a non-executive director advising Boris on sport and the Olympics.

"She and I agree that there is much more that can be done to promote sport and to develop sporting facilities across London," Mr Johnson said.

"I have already pledged to ring-fence London Development Agency money for sport, and if I am lucky enough to win she will be working on an agenda that includes protecting playing fields, boosting sports clubs and making sure that London's kids all benefit from the Olympics.

Kate Hoey, who is MP for Vauxhall, has so far made no comment on the announcement.