London Mayor Boris Johnson has announced a £30m scheme to improve participation in sport at grassroots level.
The project will bring facilities such as mobile swimming pools, boxing academies and street athletics to all boroughs in the capital and encourage competitive sport for disabled children.
Mr Johnson said the scheme – A Sporting Future for London – aimed to build a healthier and fitter capital as it gears up to host the 2012 Olympic Games.
More than a fifth of the children in London have been classified as obese and half of Londoners deemed "inactive" with this inactivity costing an estimated £105m every year.
A new strategic forum, the London Community Sports Board, has been set up to co-ordinate the activities. It will chaired by London's Sports Commissioner Kate Hoey and the board's members will be announced this summer.
Ms Hoey said: "Our plan is supported by every key stakeholder, and for the first time that I can recall there is a real and palpable sense that we are all pulling together in the right direction with one clear voice."