From my sister:
Brian refused to accept a pint as the barmaid had poured beer from a plastic container into the glass before pulling the pint. She pulled him a fresh pint, but then the manager had a go at Brian for having sharp words with the barmaid. It looks as though this is normal practice, as each pump had a square plastic margarine tub balanced in the slop tray underneath the bar. Makes you wonder what other unpleasant or unhygienic practices go on there.
Bill