We've gone members only - tis is only viable if you have your own room and can keep the public out. Entertainment that is not available to the public (ie the person trying to raid you) cannot, by defenition, be public entertainment. I've done a fair bit of reading around online, and as far as I can make out, if you can keep the bastards out, they can't do anything. It is hard turning people away, but I find reminding myself about the possible fines makes it easier to stay firm.

Being a small club, this is easy enough to police and maintain - it would be harder for larger clubs. It is also awkward when we got folkies from further afield, but not impossible - if in doubt, phone a club 48 hours in advance, that way they can sign you up as a member.