In reply to graham117:
Most bits of rock in that area, and there are plenty, have been known about for years, but I doubt if anything has been recorded. Although there was one route in the quarries written up, without trawling through old guides i believe it was climbed during the period of the second world war.
There were some chalk marks on the rocks at Horsley Castle a couple of years ago, also evidence of cleaning.
Folks do seem to keep rediscovering the area.
John Gresty