You can try for a replay on FR24 or ADS-B EXCHANGE to find his destination,and operator on G-INFO..Was your MiL disturbed ,or enjoyed it..?...no camera or CCTV...? perhaps it was a local `display`...in the wrong place....?...unless it was a Spitfire/Hurricane/F-35,i`d be inclined to go to `Option2`.....call owner/operator.....