I think it was a very good programme and the scenarios were spot on. It is irrelevant that there were a few factual inaccuracies and those that dwell on that are missing the point.
Last week there was a go around when the subject aircraft RT failed on short final. Any pilot wondering what the ***k is going on could easlly miss the turning point on the go around procedure by a mile. And on 09L that would make the difference. Don't kid yourselves otherwise.
Wedge asks
"If LHR had to be closed, for the reason in the programme (no fire cover due to airport fire services attending the accident) or any other - with huge stacks of holding traffic, do the contingency plans include diversions to military airfields (eg Brize Norton/Lyneham?"
Well another home truth. There is no contingency plan. Its all down to the TC Traffic Manager who has to think on his feet.
NATS has reacted badly to this programme and they would do better looking at there shortcomings rather than trying to tell the world it could never happen.