A death threat at Glastonbury festival in 1989. The police told me not to go on, but I said I had to because I was headlining. So I wore a bullet-proof vest. It seemed unlikely that I would be assassinated, but it was shocking and very stressful.

When I had cancer. I was having a shave and thought: “Are you meant to have a big hard lump on one side of your neck?”

I was knocked over by a taxi in Liverpool when I was seven. And I fell off the seventh storey of a car park when I was 10 and broke both legs, my collarbone and my arm.

A horse-riding accident when I was about 15.

To me and, I think, to all of us, it was a realization that our world is finite, it is small, it is fragile, and we need to start thinking about how to take care of it.

And I think that still is true of this business — which is basically research and development — that you probably spend more time in planning and training and designing for things to go wrong, and how you cope with them, than you do for things to go right.

I didn’t like it at all. This problem is called Meniere’s syndrome. It causes dizziness, nausea, lack of balance and so on. The prediction was that in some cases it was correctable. I said, “In my case it is going to be correctable.”

It would have to be that one lady teacher in grade school. All six grades, one room, 25 students. She was about nine feet tall as I recall and a very tough disciplinarian. Always had the ruler ready to whack the knuckles if somebody got out of hand. She ran a very well-disciplined group. I think most of the youngsters responded to that. There were one or two that couldn’t handle it and obviously they dropped by the wayside. But that still sticks out in my mind.

We worked with the engineers in the design and construction and testing phases in those various areas, then we would get back together at the end of the week and brief each other as to what had gone on. So even though we were there competing with each other for the first ride, we were still acting as a team, and helping each other in those days.

My wife and I have always tried to explain to the girls — even when I had to go off on nine-month cruises in the Mediterranean or in the Pacific — why I was doing it, and what it was all about, that I felt that I could contribute to the military.