Hi Anybody, In my case I phoned them and they told me to check this out on the direct gov site.
http://www.dwp.gov.uk/docs/gl24dwp.pdf
There is a form you fill in on why you do not agree with the decision, I had a few pages worth. I just explained in the form why each point they had put me as fit for work was wrong, I think they go back to the person who looks over your case so they can re-assess it.
If they still think you are not eligable for esa you can then take it to a tribunal. It explains all in the link above. Hope your medical goes ok for you.
I was quite suprised by my last descision as she was very empathetic took a geniune interest and looked very concerned for me. Not like previous assesments where they did not make any eye contact, or hand me a tissue!
Just hope it gets sorted as they have put my rent and council tax benefit on hold since as well, and they want a load of info I can't supply.