This one is for PCG members mainly. As a matter of interest has anybody searched Radford Quarry face for caves. I am sure they must have but thought worth asking. It is now a Countryside Wildlife area on the opposite side of the lake to Radford Cave.
Myself and my wife searched the entire area a few weeks back and couldn't find anything. You can see many small openings where bats go, but apart from that, its just filled with water.
I believe it homes the spider "Horrid ground weaver" and due to it being a protected species, Wainhomes are unable to build anything there.
There is a way down to the Quarry via the wooded area west of the walkway to Radford Lake, but is a little slippery going down.