I also live not far from Brockley/Ladywell cemetery, as well as Camberwell, Nunhead, and Hither Green and will be visiting over the winter now that the aforementioned brambles and shoulder-high weeds are dying down. So if anyone has people they want me to look for, now is the time to shout. But be warned that even if you pay the £30 and get plot numbers and maps it can still be impossible to find a grave. There are a couple for which I was given all that and descriptions but which have defeated me despite several visits.
Some graves are now being reused and when that happens the new headstones sometimes name the original occupants.