Thank you very much for the advice Bellerophon.
The respray is being carried out by G & B Autospray in Royston, Herts and is well under way now. It is indeed a full bare metal respray and their process seems surprisingly similar to the methods described in the
401 launch press release available at the JEL450 web site.
I have been able to visit several times during the preparation and so far, I would heartily recommend them. The big question now is what colour to paint it. For the last 20 years I have known it as a cream coloured car, but it turns out that it should be Cambridge Grey (green really).
Daniel