One of the contributers to this thread is ex, perhaps current, crewing/rostering of known (to me) anti pilot views. But to move on..
Andrew Haines, CAA Chief Exec, on record: "There is no doubt fatigue is an issue but, at the moment, the evidence we need isn't there, because pilots don't tend to report it".
The reasons why pilots don't report fatigue have been posted previously; as have the CAA approved Doctor's (AME's) concerns.
But to those non industry readers of this thread; the industry regulator is concerned about fatigue in pilots, the Doctors who monitor pilots health and have a legal responsibility to the regulator to monitor pilots health are concerned about fatigue. Easyjet, one of the largest UK/European airlines, could potentially be on strike becasue of fatigue concerns.
As ever in the aviation industry/service industry, until the there is an incident involving loss of life on the scale of multiples, nothing will happen.