Well, having gone out a number of weeks ago and got lovely GPS tracklogs of all the streets between Wimbledon Mainline and South Wimbledon stations, only to find someone had beaten me to it (although there's a couple of little roads missed, and no pubs or anything marked), I thought i'd best get on with some other bits round South Wimbledon.

Started walking the roads south of Kingston Road, bounded by Morden Road on the East, and the Tram line on the West.
Batteries died on me (D'oh!), so I had to stop half way, but will try and finish it off this weekend (weather permitting).

Not sure how to mark up the Emergency Access Gates on some of the roads though.
Guess i'll have to see what someone else has done and just copy that (although that will require getting going with JOSM, rather than Potlatch which i've been using so far (but then I need to do that anyway, coz Potlatch doesn't allow me to do everything I want)).