When I had my aortic cvalve replaced in my heart I also notified my insurance company. It made no difference to my premium. They thanked me for telling them, but added that the operation had cured me of the problem so it had no effect on the premium. Good old Peter James Insurance.

Having said that I am not so sure that any admission of Parkinson's or other ailments that affect bodily and mental function would be received the same way Geoff.