Recently there was long thread about the BCA. I can now post possible answers to some of the questions, such as "Why is the BCA still raising membership prices when there is a significant amount still left in its coffers?"
Didn't know you could get one. Mind you, when I went, we didn't do the official "tour" and swam across the lake.
If anyone is interested, there is a description and some pictures at: http://www.cavedatabase.co.uk/showacave.asp?id=3056
There are also some links to other sites one with a really good picture.