Firebird, that is superb help. Many thanks indeed. First-hand information is the best.

If you ever get a chance to visit the museum, please do. walk down the drive from the enormous hangars to the control tower and vintage hangars a) to check up on what they have put up for curtains and b) to see all the little bits of England, I sent out there, so the Americans could see how we lived during the war and c) to be in utter awe of all the amazing and unique aircraft they have there. I cannot recommend it enough.