Well, I wasn't too impressed with the neurologist. He seemed to fix on my tremor and said that it didn't seem too noticeable (annoyingly, it wasn't as bad today) rather than other symptoms which affect me more.
The upshot is that he wants me to have two scans (I'm assuming one's an MRI and the other is a DAT scan but he didn't go into detail), but that won't happen for a couple of months.
In the meantime there's nothing I can do about the problems I have walking (he kept asking how far I can walk - for me it's not how far but how difficult it is) or the restless legs I get when sitting at a desk (which affect my work quite badly).
I realise it's his job to diagnose, maybe I just wanted some empathy or something.