Anything else offends their 'sensibilities'. And, honest to God, they're getting more vocal, and even more physical about it.
How old are these people? What sort of demographic do they occupy?
The session 10 days ago simply closed early because our music was, apparently "f***ng sh1t" and we were disturbing their darts match.
Code for "It was fetching and they were nonplussed to find themselves transfixed, which was socially embarrassing and therefore unacceptable." Did the landlord ask you to quit early?
The main culprit then waited outside the pub (where the landlord couldn't see what he was doing) and followed me down the road to my car when I left. I got away because I got in the car quickly and drove off. But this sort of event is becoming fairly common round here.
This is very disturbing. There's no call for it. None.
Of course, there's always the possibility that my playing, and that of my friends, really is so bad that it deserves this kind of treatment.
Remote as that must be, then these "friends" of yours should have a meeting with the landlord about it if it bothers them so much, and not behave as thugs instead. Failing that - and somehow I think such will be the case - YOU should have a meeting with him, and see what kind of solution there may be for it. If you're being menaced to the point of fear of physical harm, this is important, and if I understand anything I've heard about British law, it would be of great interest to the authorities.