Well, no real answers today from my appointment. A "working" diagnosis of potentially "Functional Neurological Disorder", as well ad the neurologist saying "it may be something degenerative in my brain or spinal cord"
The neurologist did record a video of my shoogly walking, which he will email to Prof Jon Stone, Professor of Neurology, one of the top neurologists in the UK, who I will now been referred to.
--edit -- seems the NHS Fife email service / network blocks google drive links, so instead I have to send the video in on a cdrom by post...