why not just put in on your car anyways, without buying the plate, if you get pulled its a max 1000 pound fine and there is no way your gonna get pulled 60 times for it, that would just be downright unlucky.
and youd save some cash for the speeding tickets you wont get.
Talking of accessories I was in my OPC today and they had a leather effect wallet thingy that they had a litre of Mobil 1 in as a "Mobil one top up carrier".....yours for £13.95 plus oil