Can anyone recommend any climbing walls or clubs in Central or South West London?

Looking to start rock climbing again, and i'd like to know whats good in Greater London or Central London? Are there any bouldering walls or walls for top-roping/leading? Wouldn't mind any climbing club details either as none of my friends are into climbing.. Anything in Kingston, Richmond, Sunbury, Wimbledon, or near Waterloo would be brilliant :)