Under international law and convention, States may specify areas within their national airspace systems as danger areas. Generally these are where military or naval exercises can and do take place. The safety of civil aircraft operating in those areas is ensured through standard internationally agreed procedures to prevent any conflict between civil aircraft and military exercises.
There are large areas of British airspace designated as danger areas in the region of Cardigan Bay. The locations and times during which these areas are used by military or naval authorities are published by the relevant authorities in Britain. When it is intended to use the danger areas outside the published times, special notifications are given to adjacent air traffic control centres and to pilots using those areas.
There are two major air routes from Dublin to Britain, mainly London, which cross the Cardigan Bay area. The degree to which these areas are used for military purposes is, of course, a matter solely for the British authorities.
It would not be proper for me to comment on usage made of these danger areas, which, as I have said earlier, is provided for under international law. I can, however, say that there has been no noticeable increase recently in the number of notifications received by the Air Traffic Control Service at Dublin Airport of the danger areas referred to being used outside the normal published times.