....take it off and post it off to Swansea with a wee note attached.....
"I found this lying around the street next to a car and seeing as it had your name on it I thought I'd send it back to you. I know you probably didn't mean it, but you really shouldn't just leave things lying around in the street anything could happen to it and some people might just see it as litter and fine you for it.....you know the way things are going these days .....they'd fine you for anything if they could.
Your Faithfully,
A helpful friend."