Dave - last one from me as it has gotten silly - I accept my own part in that before it gets the hackles up - but actually I didn't pontificate at all about aeros in a Hunter (show me the post). Like I said before nothing in CAP403 relating to the issues of height or figure being flown is specific to the Hunter.
You haven't made enquiries because you don't know.... yes that is probably why you would make enquiries? Perhaps to the people that might know enough about it... The second page of CAP403 gives this:-
Enquiries regarding the content of this publication should be addressed to:
General Aviation Unit, Safety
and
Airspace Regulation
Group,
Civil Aviation Authority,
Aviation House, Gatwick Airport South,
West Sussex RH6 0YR
Maybe that could be a starting point? It isn't as if this isn't a big enough aviation story.