the old bill ,peelers ,cozers ,the filth ,the beast ,Babylon ,boys in blue , I think the police win it ,in terms of nicknames
American for cops: Five-O and Kojak; both from TV shows. This is getting past mainstream lingo. I could use a definition for some of them.
It may be Bob's your Uncle meaning there you go. Although if your Aunty had balls, she could be your Uncle. lol