I have just searched on AW for female escorts who do incalls:
Within 2 miles of SW12 (ie Balham) = 102 hits
Within 2 miles of SW4 (ie Clapham) = 80 hits
How much selection do you want?
Mate, You've been a member for only 4 days, with 13 posts so far...of those 13 posts, 8 have been asking for info about a WG, and no less than 6 have been brand new threads asking for info...try doing a bit of legwork yourself; seriously, just go find a WG, pay her & fuck her, and then come back and tell us about it
Alternatively, as I'm a South London punter myself, I'll meet you, you can give me some cash and I'll go & fuck a WG on your behalf and give you a report afterwards...