Sorry, a bit confused over this huge desire for controlled airspace when the controllers have a radar for the provision of a radar service? If an aircraft is receiving Radar Advisory, as I understand the majority of their commercial aircraft ask for, then separation standards are prescribed....and so if these services are correctly applied, why do you need to build further protection when the controllers there are quite capable in providing it using the expensive equipment they have got. The RAF controllers seem to have managed for a huge number of years for Inverness traffic; surely you are not saying the controllers are not up to the standard or are not applying the correct separation standards for the radar services being provided!
