I'm going to have to disagree with some of the boundaries on Philip's map. Just because something mentions Honor Oak in its name does not mean it is Honor Oak.
Underhill Road is East Dulwich and so, in my opinion is Therapia Road and the surrounding roads.
Tewksbury Lodge Estate is entirely in Forest Hill, not split across different neighbourhood.
The Honor Oak Estate is in Brockley and is virtually cut off from real Honor Oak.

Not that it really matters, at least we have three options and we can all pick our favourite. With a few more examples we could have a vote - although I don't think the forum supports the AV system, so any result would be completely unfair.