Seems all quite reasonable.
No she does not get £600K - they operators were order to either cut the racket OR pay.
I'll bet they knew perfectly well that the heli's were going to make a racket and hoped that the locals could be persuaded to shut up on the basis they we have "always been there" and they could not stop them.
The other game in this sort of thing is to start small and when you get no complaints them gradually rack up the amount of disturbance. Eventually someone will complain but then they will have undermined their case by initially accepting the small amount of disturbance in the first place without complaining.
So you need to nail this sort of thing at the very first instance as they have done.
The applicants already stated they had no objection to the fixed wing operations on the site - it was just the b*eeding heli's outside their back yard.
The Judge even went and experienced it for himself - you might have though the numnuts at Denham might have toned it down once they knew the case was progressing!
Good decision and good on the Judge I'd say.