Recently, I was sent some articles from the Chair of the Friends. These articles were in the former Friends of the Great North Wood newsletter The Wood Warbler. The Great North Wood once stretched from Deptford to Selhurst. The largest remaining area of the Great north Wood is Dulwich Wood and Sydenham Hill Woods, both managed by London Wildlife Trust.
I am not sure how old this ‘Spoltlight on….. Garthorne Road Nature Reserve’ is, but the information is correct, including the overall management aim ‘to maintain a mosaic of habitats.’!

There are a number of other articles which you might find interesting. These are about the same tract of railway (New Cross – Forest Hill) and the water courses of the Great North Wood.
A Railside Green for 2000
Spotlight on New Cross Gate Cutting (Brockley Nature Reserve)
The Great North Wood Water Courses 1
The Great North Wood Water Courses 2