Bringingupbaby Clapham on Peardon Street SW8
http://www.bringingupbaby.co.uk/#/clapham/4559729863
It is about 10 minutes walk from Wix.
My son (nearly 3) has been there for over a year and I have 2 other kids at Wix, so we walk between both every day.
Staff is very nice; recent improvement works done (actually still being done currently in the garden). My son is very happy to go there every day. I would definitely recommend it.
if you have any specific questions please do not hesitate to ask!