I think consideration needs to go to other service historic collections like:
Royal Navy Historic Flight
Royal Navy Historic Flight - Home Pages
and the AAC Historic Flight
Both of which (unlike BBMF) rely on public donation to keep their few aircraft flying (Swordfish, Sea Fury etc). The drain the Vulcan to the Air placed on benefactors must bring into question its value for money - great though it was to see flying, what an achievement!