If a garage switched out a working number plate light for a broken one from another vehicle can this be proven?

Posted by Willthisusernamebe3@reddit | AskUK | View on Reddit | 35 comments

Went garage for new tyres, come back and have check number plate light on, was working before, now it isn't.

Overheard mechanic saying "fixed the numberplate light on the superb" mines not a superb.

Has el cunto switched mine out and can this be proven or am I up shit creek without a paddle?