Seems that a Highland Airways (=small Scottish? air-taxi firm) aircraft was warned to get off it's normal flight path between Stornaway and Benbecula by a warship on exercise. Though this story
says the commander of the warship is to be reported by the airline and air traffic controllers to the Civil Aviation Authority as no notification of a restricted zone had been requested prior to the exercise.
If I remember correctly, they've only got the one J31 (= G-BTXG).