The Air Traffic Controller wants his head removed and a smelly log inserted into his neck. What a dick, and without doubt the cause of this accident. Feel for a guy whose career ends on a downer to to a third party who should have known better. I believe that in the UK the quiet freq for a display is pretty much tower/pilot and nobody else, and quiet is the way unless a bubble incursion by another aeroplane presents a hazard that must be announced. That video would be a good conversation piece at any Flight Safety Forum, thankyou for the link GreenKnight.