Sydenham to Crystal palace, just a couple of caches to fill in the area.
Continuing the series, at the published coords are some large electrical transformers. On the left (nearest the road) is one numbered black on white.
ABCDE
N51 25.(D+E)EC W000 04.ECD
Checksum - 48
Parking available on Sydenham Hill nearby. Do not park in Rock Hill, it is a private road.