I would take a wild guess that they are calling in and simply requesting it. There would be implication being that disobedience will lead to repercussions, harassment, visits. Guessing aside, I know of actual instances where they have been entering the premises while music is on and telling the staff to tell the band or DJ to stop.
The Crane Lane now stops Bands at 1:30AM as opposed to previously 2:00 AM.
Even Charlies stops weekend gigs around Midnight as opposed to previously 12:30 AM
X
First I heard of this,
There is a general trend that people want the gigs on earlier because they are nott staying out til 2am sun to thur for fear of being bagged I. The morning,we moved our midnight gigs to 11.30 hence the earlier finishing times ,going out earlier Is where it’s been the last 12 months and heading home earlier.