Thank you Birdy, so much. I did phone the MH crisis team back in 2014 and I had a session of CBT which didn't go well, mainly because I focused on the agoraphobia, rather than the food. I ended up seeing a hypnotherapist who has helped me with lots of other things but we don't seem to be able to do much about the food, in fact, it's got worse/more rigid since seeing him.
I'm considering EMDR and have found someone locally who seems very supportive and who has experience of eating disorders. When I can pluck up the courage, I intend to have some sessions. I never had this fear of being hungry growing up, it was only when I went on the Seroxat, had horrible side effects of increased anxiety and really bad upset stomach and started to associate anxiety with hunger that this all started. I don't know whether there's some trauma there because it was such a difficult time or what.
I also think I may be autistic, although haven't been formally diagnosed but I fit a lot of the criteria and a lot of things from my past make more sense when considered that way. I'm wondering if this is what's making it harder to treat or I just haven't found the right person?