>Policeman are supposed to say, "Let's be having you"

You know when in a TV Cop show the cops says "You have the right to .... etc, etc etc". In an old UK Police programme like "Dixon of Dock Green" they would have said "Let's be 'avin you", none of that legalese stuff!

It's a jocular way of arresting someone from the days when you could spot a villain from their shifty expession. It means "Come with me to the police station". No great word play, just an expression. The reply would be "It's a fair cop guv, I wus only taking some coal to put on the fire for my starving missus and children". You knew where you stood in those days!

See ... we said it really, really wasn't worth it.