Grenville
The contents of the AAIB Special Bulletin demonstrate that your self-indulgent diatribe in your post 329, regarding your predicted scenario, was well wide of the mark in most areas. Which was of no great surprise to me, or I suspect any other pilot familiar with flying IFR twins in the London area.
I suggest it's time, to use your own words, you licked YOUR wounds, pipe down a bit and think before you post. Pete Barnes may have made a mistake here, but he was an outstanding pilot with I suspect vastly more experience of the kind of ops you are trying to be an expert on than you. This whole matter is far too tragic and serious to be treated as some Sherlock Holmes novel.