Thank you all,
I was referred to a neurologist who provided the diagnosis. Due to the obvious gravity of the diagnosis, I sought a second opinion that was also in line with the first. Both of the neurologists' particular interests are in migraine and balance issues.
It terms of diagnosis and investigations (and process of exclusion) I am very confident of the diagnosis.
Unfortunately I can see no way out of it. Class 1 has been cancelled and more than several doctors (including the authority panel) are backing it.
Sought every bit of medical specialist advice I could find. I have tried every avenue that I can think of. I have done everything I possibly can. I was hoping that there could be another answer - but it appears that acceptance is the only answer on this one.
In any case - thanks kindly for replying.