We also suspect that is has been re-shelled which is fine by me, but without the written autohorization, I will never be able to get on the road, since the MOT will not pass it.

Only way out of this is to either prove that the shell IS a Cossie or pay the import tax on the car which is approx 4.000£ !! ...
So ... hoping to be able to prove that this is, in fact, a real Cossie and not a Sierra Ghia with a Cossie conversion.