Yes, I was referred to a local mental health services, they did an assessment and recommended that I did a group CBT class. It was called something like an 'Anxiety Education Class'. It was six weekly sessions of two hours in a class of about thirty people and it was really good. It helped me finish off a lot of work I had started by myself with simple concepts like laddering (where you take little steps towards achieving your goal) and understanding how you maintain your own anxiety. The lady who assessed me and ran part of the course told me I was probably the worst anxiety sufferer in that group by quite some way. I would guess most of those participating were mild to lightly restricted sufferers. I was managing things much better after the class, but I still had a huge amount of anxiety to manage. I was just managing it better. It was not until it was discovered that I had a chronic vitamin D deficiency, and until I was actually seen by a specialist in that area, that it was explained to me that if you have this problem, you will get increased levels of parathyroid hormone, and one of the key symptoms of this is anxiety.
I have always suspected that the anxiety I suffered had a physiological cause. (Blimey, I think that is the first time I have referred to 'suffering anxiety' in the past tense!) During the phase when I was on and 0ff of the vitamin D supplements, when it was being treated as dietary problem rather than my body being incapable of retaining it, I could get a better perception of the physical aspects of the problem.
In my case I am unusual because I can say that a large part of my problem was physical and fixed with a simple vitamin D medication that only became available several months before I was prescribed it. I am convinced that there are others in this world who are currently being treated for depression and anxiety with all kinds of medication who have an underlying vitamin D deficiency causing them problems. The problem is the research is almost non-existent and the condition is almost impossible to diagnose within the existing NHS routines. There is not even a proper name for the condition I have. I am in the early stages of planning what I will begrudgingly refer to as a 'campaign' to try and get a few things happening. Hopefully I am quite well positioned to do this.