I'll second that. I was invited along to the northern training camp a couple of years ago, as a non-diving caver.
Not only was there a wealth of knowledge, but also a wealth of generosity; I was given all sorts of kit, wetsuits, diving harness, helmet, lights, knife, mask, even a set of regs!
And the training, support and generosity has continued.
Only this weekend, Gareth was showing me how to rebuild and balance a reg out of two incomplete units (I haven't dived it yet, but it seems to work!)
Thoroughly recommend the training camp to anyone interested in cave diving