Tango 123
Forgive me if I gave the impression I was trying to turn this into a civ/mil pissing match. That was never my intention.
I have just reacquainted myself with Rule 28 and you are indeed correct, unless they had written permission from the CAA in respect of that site.
However, we are agreed that VFR was probably not an option, I believe it could have been legally conducted under IFR Rule 33. At least that's my interpretation and I stand-by to be corrected. If my understanding of Rule 33 is correct, surely crews should receive training in techniques they, on the face of it, seem likely to employ.
JJ