I hope the CAA don't see aircraft supported through this system as being similar to permit type aircraft whereby foreign registered aircraft are only allowed to flyin UK airspace for 30 days per yr.
This is the present situation for aircraft without a full C of A - i.e. permit or experimentals. As the CAA presently charge these aircraft for visiting the UK for a maximum of up to 30 days this is actually a real possibility - given the CAA is driven by fee revenue oppertunities rather than safety issues