ShyTorque.
I think you are doing an admirable job acting as an unbiased spokesman for the rotary world. I suspect that you and all your fellow UK based rotary colleagues have got some well informed opinions as to what happened.
For sure the AAIB will have seen the flight path and transponder readouts , not to mention ATC transcripts of the ill-fated flight already.
Doubtless , Heathrow ATC will have a very good idea of what happened too, though I puzzle slightly at the break in R/T transmission after leaving LHR Approach. We can all hazard guesses as to why that happened, but again will probably never know.
Keep up the good work!