Hi!
I really rate the playgroup at St Marks on Battersea Rise. It is clean, lots of great toys and I have made some lovely mummy friends too.
The only drawback is you have to queue from about 9.30 to get your ticket..starts at 10! Very popular!
The other playgroup I think that is really good is at the Salvation Army near the ram brewery in Wandsworth..
On a Tuesday...at 10..it is free for the first couple of times you go and then about £2 after..it is quite new so not many people know about it.
I have been to St Anns but wouldn't go again...toys are dirty and the set up is poor! Picky mummy!