FJ over Edinburgh just now?
Lots of people on Twitter just now reporting a 'very low fighter jet' overflying the city. I was in conversation with a friend near the city centre, and she commented on it as it happened. Saarch Twitter for edinburgh and jet...
They know what such things sound like, as they get a lot of it during the Tattoo. Can't see anything on FR24 to suggest anything nearby or over the North Sea which might be attracting airborne attention - any clues?