Thanks blokes,
Stealers will only supply a complete number plate assembly and quote £71.20 plus fitting..... erm don't think I'll bother.
A mate at work suggested I look at trailer gear and low and behold have found a gold mine of red rear reflectors - none fit the Vee though!
The size is the problem 60mm x 45mm - you can get loads of reflectors no problem for about a fiver up but the smallest I can find is 90mm x 45mm - I could cut it down but that would be obvious and look tatty no matter what I tried. plus I would probably snap the bloody thing as I cut it to shape.
Did find some heavy duty red reflective tape - from the pics, looks like the plastic reflector and maybe the muts nuts, on flea bay, a fiver for a metre, and free delivery, will try this and let you know how it goes.
I doubt I'll be the only one to have this experience, if that is the price the stealers are charging. No wonder someone nicked mine - what a scam - charge a high price, that encourages scrotes to nick a replacement and fleece the victim - a nice earner for sure.
Vee owners might need to keep an eye on this one - maybe use some Araldite on the screws to stop it happening to them.
Thanks anyway for the help - much appreciated.
This site is the bees knees, with loads of info and fun.