We were treated to the tail-end of an exercise recently using our location it would appear as a triangulation point. Had several apache helicopters hovering over the house with fast jet cover overhead. Evidently some troop landings in fields with pyrotechnics getting flung about. Shame it was from 2200hrs onwards so couldn't get any pics but kinda cool if you like that sort of thing
. Interestingly a neighbour had some of the activity on flight tracker and the jets came up as 'private contractor'