I have no doubt that you are 100% correct BV.
However, the GBP will be wondering how come they pay £70M for a Typhoon and god knows how much for C-17's and Voyager, and they can't make it for a flypast with all their nav aids/radars, and yet the Reds can in elderly jets?
I suggest they won't understand your very correct rationale.
A poor
PR day for the RAF, albeit undoubtedly the correct decision-thanks for the explanation.