Scurrying around looking for loopholes isn't the answer, nor is keeping things quiet and hoping we'll keep getting away with it. Right now the whole thing is on the political agenda and the legislation is proposed promises to make things a lot worse - no more two in a bar exemption, and it won't just be the landlord or the organisers who will be liable for a fine or imprisonment, it'll be the participants in any unlicensed "performance".
At a time like this the sensible and proper thing to do is to be as public as possible when we do something which breaches a daft law - and to aim for maximum publicity when the authorities come down on us. Which is in line with the attitude demonstrated by the Cerne Abbas giant - who might make an excellent graphic symbol for opposition to the licensing regime.