Hallelujah! I finally got to see a senior consultant at an inner London sleep study centre. He put me on a combination of Clonazepam and Melatonin. He also promised to write to my GP with respect to a possible referral to a CBT specialist who is fully au fait with sleep disorders. Unfortunately, my GP has not heard from him since, and the consultation in question was held over a month ago. I also had to go all around the houses to get the Melatonin prescription renewed as my GP has not been contacted about that either. I think I have beaten the drum too often about the deficiencies of the NHS (although my stint at the Royal London Hospital a few years back was an eye opener) so I would prefer on this occasion to focus on any feedback from colleagues who have secured CBT from a therapist who is familiar with the vagaries of a diagnosed sleep disorder. Any constructive responses are more than welcome!