I forget the precise show, but there was one setup with a lorry left with its rear doors open and boxes inside. Some joker climbed up to nick one of the boxes, then two guys slammed the doors shut and pulled down the sides to reveal the joker trapped in like a zoo enclosure with bars. The lorry then drove around central London while a loudspeaker proclaimed things like "See the common thief in its natural habitat!"
If I find a clip on the tube I'll link it.
