The answer is simple (allegedly) . Extend lower altitude 'controlled airspace' to cover 99% of the U.K.
That way, GA will be able to have their collisions in the remaining 1%, and, of course, the reducing emergency services will be able to predict where they will be needed. A 'Win win' for certain recent 'airspace consultations'.
(For the record I am familiar with FLARM, and we are about to fit one to our Glider. However, as a pilot who had 'LOOKOUT' beaten into me from day one, I am a bit concerned that, if mandated, it will become the main collision avoidance system for some. I have a nightmare vision of some pilots heads down, staring at an electronic nav system - never looking out and boreing on regardless until the FLARM Screams!
)
just IMHO.