The first sign I had that there was anything wrong was one weekend in February. I had come home on Friday evening with a nasty headache, which just got worse and worse. By Sunday morning I was almost delirious and my wife was concerned enough to call a locum. The doctor arrived and took my blood pressure twice, but thought her equipment was faulty. It was reading well over 260/120. She then realised that the reading was correct, and called for an ambulance. In hospital my BP was stabilised, and on my release my GP prescribed medication and checked my BP at first every week, then every fortnight.
All this time I was desperately tired, and would regularly fall asleep when I arrived home from work. I was still travelling a round trip of 200 miles a day, and was out of the house from 5:00 am to 8:00 pm. The problems with my vertebrae were still there, but not quite as bad as they had been.