A Vehicle registration certificate (V5C) – this must clearly show that the vehicle was made or first registered before 1 January 1977. If you do not have a V5C, or if you think the age shown is incorrect, you will need to produce an extract from the manufacturer/factory record or an extract from the appropriate ‘Glasses Check Book’. Dating certificates from a vehicle enthusiasts’ club are not acceptable to change the date of manufacture for an already registered vehicle.
(If the V5C indicates that the vehicle was registered from 1 January 1977 up to and including 7 January 1977, we will let you register it as a historic vehicle, based on the assumption that the vehicle would have been made in the previous year.
Sorry Stuart if this old info but I didn't know. this.