Chaser,
A bit before my time but I believe it was to do with Heli ops.
Those ops based directly beneath the reporting point, the hospital.
Dunno about you but I'd rather they had all the room they needed.
Dick,
Random thoughts about BK.
If BK (like all GAAPS) was class D, wouldn't that mean that the specific training required for controllers to operate a GAAP wouldn't be required? Isn't that training a cost for Airservices that could be reduced if all non-radar CTA was class D?
Sure there are procedural differences, but surely there's a saving somewhere.
If Class D is too restrictive, perhaps all class D becomes GAAP instead?