Isn't it just an old UK one?
Yes it is, however the vehicle it's on is a Dennis TransBus Alexander ALX400 Trident, made after 1998, that particular one registered 2002 (bus geek!) - the plate's illegal to use on a modern vehicle, after 2001 it should be of plastic, retroreflective construction, black on white to the front, black on yellow to the rear using a flat, standardised font and to the correct measurement, bearing a kitemark and manufacturer's mark!
Damn Frenchies breaking our law!
French plates are EU standard too!
EDIT: The general election 05 one was ex-TWM MCW MkI Metrobus!
Oh it's such a perfect day, I'm glad I spent it with you...