Some interesting points raised so far.. .As an ex mil area radar controller and now a mil terminal controller I have seen this sort of situation before. Whilst I fully sympaphise with the view of the civil area controller that they have no responsibility outside CAS, the immediate route on leaving CAS is important and they surely have a duty of care to ensure that the route is safe. Eg approving an aircraft to leave CAS on a direct track to a destination airfield that will immediately aim for a danger area within 10 miles of CAS. Although pilots should know better, many are foreign and do not understand UK airspace as well as they perhaps should - many also do as they are told without question as they trust UK ATC to look after them so much. On a more interesting note, if the airway was there, why wasnt it used?