While the 1980 book was being serialized in the Sunday Times, Charles attacked it through the Observer.

As somebody who's been writing about this subject for getting on twenty years now, it's astonishing how the climate has changed in the last five years.

What it was at the time was literally a plea for, to get the pressure off for a while, to give her space to breathe. She was very unhappy. She was feeling pretty claustrophobic.

I went on a long trip through South America with Prince Charles where I was the only journalist there - a couple of photographers but no other writers.

If you have an anecdote from one source, you file it away. If you hear it again, it may be true. Then the more times you hear it the less likely it is to be true.

I think the relation between the monarchy and the press is very much a two-way street.

Well I'm a very similar age to Prince Charles. I'm a year older than him. I was at university at the same time as him. I think in the sixties, like all the Royals, he really had very little impact on my life at all and he seemed, if anything a lot older in his attitudes.