actually forget that last link i dont think they could tell have you read all these?
http://www.dft.gov.uk/stellent/groups/dft_roads/documents/page/dft_roads_506867-02.hcsp
im not sure if they can get the year maufactured by the frame number?
http://www.dvla.gov.uk/vehicles/vehicle.htm
call them and ask if you are not sure