I followed this thread with interest and especially like some of the historic map links.

Had cause to think about this again when I recently looked at my AtoZ. I noticed it has Honor Oak and Honor Oak Park marked as two distinct areas. The former centred, on a point on One Tree Hill, North-West of Walters Way, the latter roughly where Stillness School is. These are of course approximate as the area names by necessity hover over green space.

I think it is also interesting to note that the 63 bus which claims to go to Honor Oak, really does in the sense that it turns round where the old railway station used to be.

Based on all this it would not be unreasonable to call the area, at least as far as traffic lights at Dunstans and Forest Hill Road, Honor Oak as I think at least one poster suggested. Beyond that is an area which includes Peckham Rye that a lot of people, including myself, call East Dulwich. A much longer term resident than myself I know grew up calling all that Peckham.

I realise that there is no right or wrong answer to all of this as boundaries and usage change over time. Just thought I would throw this in the mix.