I don't know if the sign is still there but I do know a music pub that bars all "travelling boys". I have argued with the landlord about it and he tells me that before he made the bar "travellers" were groping other people's wives in the dancefloor and if a husband were to object next time he went to the loo he would be followed in and glassed and have the shit kicked out of him. The landlord said that that was the norm not the exception.

I have been to that pub for music events many times - and never seen any hostile event during live music - but the policy came in before my time of doing music at that pub.