PCSO (Police Community Support Officer), basically a person who wears a uniform like a police officer but isn't one because they failed the recruitment tests, they are usually on a power trip.
Known as a blueband due to the blue band they wear on their hat to distinguish them from proper police officers.
PCSO: You're too young to drink alcohol, give me your beers.
Kid: No, get fucked!
PCSO: Do it now!
Kid: Or what? You can't do shit blueband! *laughs in the ace of the PCSO*