The worst plod that I remember was the South Yorkshire police during the miners strike back in the 80's,you was treated like cattle visiting an away ground in SY thenMine was Walsall away in the FA Cup, 1986.
Open terrace, snowed all day, frozen and wet.
Went for a pee at the end of the game (won 3-1), into a dark brick 'shed', ankle deep in it. The local constabulary wasn't the most sympathetic I've come across