I'm surprised that no one else from BFTO has popped up yet.
Anyway, good club with lots of things going on in all types of airgun shooting, to members it is open 7 days a week all day. Best time to turn up unannounced is Tue/Wed/Thursday evening or Sunday morning.
People are around almost any time of the day but not guaranteed.
Drop me a PM if you want any more info.