Charged the police in the canteen, never.
As a schoolboy I used to deliver pizzas for dominos and if an officer of the law came in there was no charge, we often delivered pizzas to the station, again no charge.
And the police had some sort of charity funday one weekend and literally every other pizza that day was for them, no charge.
But then we had a couple of armed robberies while I was there and had to hit the panic button a couple of times because of drunks trying to attack the shop staff late at night.
And they were always there mob handed in minutes, car doors flung open and out before the car had even stopped.
So the manager did not begrudge them a few free pizzas.