It's funny, all the kit cars I've owned over the years have never been seen again ! The only exception was my McLaren M6GTR by UVA. I caught up with that after two years at the now defunct Donnington Kit Car Show about 18 years ago !
Looking on the government website and entering various reg numbers from my old cars found a few more, mostly SORN and off the road for years ! Some seem to have vanished all together, exported perhaps or scrapped, I hope not !!