TBM, not sure what you're suggesting here, that your B-25 or A-26 were knowingly unairworthy? That is the issue here, not the age of these airframes. Much older ones fly in both UK military and civil airfleets, including WWII vintage types such as yours. Even if these VC-10s were airworthy on arrival at Bruntingthorpe, they certainly aren't now, and never will be on any commercial basis. No way would the CAA contemplate restoring them to the UK register, why then should it allow flight in/from UK airspace on a foreign register?