I decided to have a go at taxing a 1971 B25, which has not been on the road since I restored it many years ago, using the DVLA website. To my amazement, the website recognised that it should be in the Historic Class and it is now fully tax and MOT exempt after simply putting a tick in the right box. Couldn't have been simpler. I might do the same for all the other BSA bikes I have in my collection. However, not sure this will result in a new V5C being issued with the change of class but will see what happens.