There is another chap called Barry that operates a small outfit called MultiTech in Ottershaw, on the same compound as D:Class, with whom you may wish to speak about the interior restoration.Just checked them out on Google. They do look great. Will definitely call them. Thanks so much
Finally, another highly considered outfit is Canada Coachworks, though they're in Byfleet.
I had a full respray (roof excepted) by FB Coachworks in East Moseley (ironically, I dropped in on them opportunely as Vanleigh were mistakenly closed on the Monday after VE Day, assuming that it was a bank holiday) and chartered the journey here.