I am sorry Guys and Gals, but this string has made me register and comment. You cannot be serious! I have witnessed first hand the trauma of alcoholism, and the effects on families, ones own and those of innocent "by-standers".
You debate for two days now what this lady should do. The person in question has flown how many flights in this time? 2, 3, 6 or more?
The responsibility of this lady is to get this person out of the cockpit now, not in three weeks time. And if she doesn't do it, I would even go so far as to say that London Flyer, who certainly knows the name of the airline involved, has a moral obligation to go public.
Look at the reported reaction of a Senior Pilot with the company - "don't worry your pretty little head about it", and it seems that the problem is known within the company and nothing is being done.
This is a disgrace.