I got mine at a show. all I gave was the plate number and they are legal all marked up as said.
I've got pulled over two weeks ago (3rd time in 8 years) thought it was for the plates, but it was for my rear tyres, he thought they was bald on the inside. They aint. he Then radioed through and done all the checks reading the reg plate over to, whoever lol All fine of course. He said keep a eye on them and I have a nice car. maybe he is a golf lover.
