PPL making a comment here (sorry)
There have been a lot of comments about the alcohol 'policy' but may I just mention that zero tolerance of alcohol (or other chemical entertainments), is now normal in some UK organisations . I am currently on assignment as a consultant at Network Rail, and it is hammered into you from the day you walk into the place that this policy not only applies to people who get close to trains/signals etc., but to the tea boy, the computer jockey and the window cleaner. And, they do random tests ( I heard of 3 in London last week).
I hope like hell this turns out to be nothing more than a mistake because it seems to me that here is a guy(?) at the top of his game who has just booked himself a quick exit from a very good career. If he has turned up, stinking of booze for a flight at (7pm ish), he has either had a bender and a half the night before or has blatently disreguarded rules and common sense in the hours predeeding the flight.