Would it be fair to say that perhaps UK ATC aren't taking FABs as seriously as some of the other ideas floating around at the moment for efficiency, or is it that nobody knows enough from UK ATC to stick their neck out and talk about it in certain terms in the media?
No, it wouldn't be fair. The UK/Ireland FAB is one of only
2 which are actually up and running and producing something for the airlines.
The benefits and savings have been calculated and NATS and the IAA publish these on their FAB websites and newsletters.
UK Ireland FAB