@Dizeez Chris, welcome to the site, and sorry you’ve been suffering.
I agree with @Onandon03 - indeed the new ENT NHS hospital in London is top class 
However, I would highly recommend seeing the Private gang at the Balance Centre in Grafton Way in London if you are in a hurry.
Do not expect miracles, as much of this illness is still a mystery, but they are very good at conservative treatment. Though I was in a hurry to try all sorts of things, ultimately I believe the conservative approach is the right one given the lack of certainties.
There are many many good consultants in Harley Street, but you may find you get 5 different diagnoses with 5 different doctors.
PS may I also compliment you on the hilarious choice of username! 