A bit of an odd letter, Barry - I'm not sure what point were you trying to make?
The 'pull' of the Vulcan at airshows is likely to be considerable, but cannot be guaranteed. The aircraft will indeed cost a fair bit to operate, but the public support to get it flying again, despite the cost involved, has been very obvious. As have the financial sacrifices made by the very many donors.
Any airshow which cannot afford the Vulcan's participation will be at a considerable disadvantage, notwithstanding the quality of the other participants. So perhaps, if anything, they will have to do more to attract spectators and you may find your participation in greater demand than hitherto?
There is no reason to doubt the professionalism of the VOC; the aircraft is in a much better state of repair than it was with VDF, it has to be flown under an AOC and is maintained to current 'commercial' standards - even though it can only have a Permit to Fly rather than a CofA. Furthermore, the display pilots are of the highest calibre and will display the aircraft in a sympathetic manner in order to preserve it for future generations to enjoy.
The Authority have been very supportive thoughout the project; the present day CAA is far removed from the 'Campaign Against Aviation' of yore.