i spoke to the dvla today and it seems its a bit of an open book,if i have documented proof of a vehicles history then i can regain the number,so if i restamped the frame,to the buff logbook i then have documented proof,but if someone has the original frame somewhere without documents then its not going to get accepted,who's to know if the original still exists ? but still its only the reg number that isnt on the dvla,they cant check if a chassis still exists.i'll do a bit more research seeing as the bike is still parts at the moment and i've got to finish my tribsa,