Similar occurence yesterday evening 2045-2115Z north of Scotland and was seen by multiple aircraft on frequency (Scottish) and 121,5.
Sighting was in NW direction and seemed fairly low for such a bright satellite (as if it was FL350-FL450). We thought maybe some military A/C doing refueling or dogfighting with their lights on as it seemed some kind of racetrack pattern were being followed. Moved right to left at high speed, almost to fast for regular aircraft so it fit’s the description of the Starlink Flares as being mentioned.
Only thing weird to me is that it was extremely bright and low on horizon without any distortion of the atmosphere. I’ve seen passes of ISS which were less brighter than yesterday’s sighting. Somehow amazed that such a small Starlink would generate such a strong reflection at such a low angle towards the N’Pole.