Aren't public houses in the UK licensed for a certain number of people? Every restaurant, pub, etc. in the USA has a sign that says "Maximum Occupancy NNN" where NNN is some number (103, 47, whatever). If there are 103 people in the restaurant and your maximum occupancy is 103, you just don't let any more in, or suffer the wrath of the law for safety violation of your license, and rightly so (assuming the number is reasonable for the size of the joint).

Don't y'all do that over there? If so, where's the problem, and why have the blue law?

Alex