Just a thought - the AAIB aren't obliged to investigate this accident. They may well just ask the pilot for a written report which is then regurgitated in a bulletin.
If, as has been intimated, Scottish have filed CA939 reports (Report on Alleged Infringements of Air Navigation Legislation) then it will at least be investigated by AR&E at the CAA. As it's now got a rather high profile, who knows what AAIB will do...
Never mind the r/t transcript, I'd be more interested to hear the phone transcripts/recordings between Scottish and Edinburgh!