Car park warden Peter Alldiss is no longer shocked by the carefree attitude of drivers. "When I started two years ago I was amazed, he said.

"But not any more, I'm used to it.

"I find cars left with the doors wide open, or windows wound down.

"I've seen laptops on front seats, mobiles left on dashboards, Christmas presents left for all to see, nothing surprises me.

"This campaign is a really good idea, it's definitely needed."