The illegal parker, in a separate incident at the same spot, later tried to attack a contractor clamping his car, with a baseball bat.
He made a massive mistake, as the clamper had in his hand a very heavy chain and being an ex Para, knew how to 'look after himself'.
A true story. Happened in...
My colleagues did that our private work car park. Then the aggressive illegal parker turned up when no one was there, and simply bumped our car out of the way, presumably with mates.