Youngsters representing eight Football League teams took part in the London United Community Football tournament.
The tournament, part of England's 2018 World Cup bid, featured community teams from all of London's 15 professional clubs including League sides Barnet, Brentford, Charlton Athletic, Crystal Palace, Dagenham & Redbridge, Leyton Orient, Millwall, and Queens Park Rangers.
A team from Tottenham Hotspur won the men's tournament after a 1-0 victory over Charlton Athletic in the final.
But, in the women's competition, a Charlton Athletic ladies side beat Fulham on penalties after the final finished 0-0.
The event, for 16-19 year olds, was held at Chelsea's Cobham training complex, in Surrey.
Football freestylers, including Jeremy Lynch from Sporting Chance, were also on hand to add some flair.
Mayor of London Boris Johnson said: "It's fair to say we Londoners are bonkers about the beautiful game and I'm delighted we're a key part of England 2018's proposals.
"I congratulate our professional clubs for harnessing the World Cup momentum and unifying their community programmes for aspiring young footballers."