There's Broomwood FC which is on Wandsworth Common - Bolingbroke Road side (opposite Thurleigh Road) & really great. Lots of very enthusiastic dads running it & when my son played it was about £20 membership for the whole season! It's all organised in age groups & starts at 10.30am (or it used to) on Saturday mornings, finishes 12noon.
Just turn up - the only problem is there are only a few weeks to go until the end of their season (mid May). It usually starts again the first Saturday in September. It's fantastic!
email address -
broomwoodfootballclub@gmail.com