Interesting discussion.Definition of an "aerodrome "is anywhere that an aircrft flies from,so his regular helipad is an unlicensed aerodrome,therefore arguabl;y he didn't break the law !
In fact the boot should habe been on the other foot.
He should have warned the festival organisers of his aerodrome and to keep people clear or else they would be hazarding aircrft and liable to prosecution !
Why shopuld we be on the defensive all the time...a good lawyer would surely have been able to fight the CAA on this one.
What does Flying Lawyer say ??