Never be fit for work.

Hello, I think any letter is useful but the Tribunal are mainly concerned with asking trite questions such as how far can you walk, whether you can pick the glass of water up in front of you??
All this seems quite trivial to me and irrelevant which I found quite annoying at the FtT. (I think they do this to distract you).... They watch how you walk in/out of the room etc. like hawks!
The Judge, the GP and disability member have to decide if the EMP report (mine was poor and inaccurate, in my humble opinion), or whether your submission is believable, so having all your medical letters etc. well organised and added to your submission is important I think.
I found a wonderful Welfare Rights Officer who was able to write a professional submission and point out some errors of law, which the panel might find hard to ignore. I did not find Law For All provided such an in-depth submission,however they did pay £50 for me to get a medical report from my doctor which lists all my appointments etc. about 25 pages in all which has been a good source of evidence.
I also have found it useful to
type up my own brief medical history detailing my dates of diagnosis of illness and symptoms etc. and the Specialists I see. I attach copies of assessments to this and refer to it when filling out forms such as DLA.
The Welfare Officer at the local council understands the 'errors of law' and the formalities of Tribunals. Not sure if it will work for me even - but hope you find a few tips here that are useful.

As regards ESA, what matters is not, sadly, whether a particular professional thinks that you are unable to work, but whether you meet specific criteria laid down by law. In theory, you could be totally unfit for work in practice but legally fit for work. This appears to have happened in a number of cases.