Any ideas about number plate casing?

[buggie]

Wondering if anyone knows of a local garage that can help with this - car gently backed into something and have ended up with rear number plate hanging off - the number plate is intact, but on the back of the casing there's been a bit of plastic snap off so it won't stay hung up on the screws.

Unsure if I need a whole new number plate or if a new casing can be supplied and the plate swapped over.

Anyone know of somewhere locally that could advise/replace it for me (if it helps, it's a VW golf).