There are people who are bound journalistically to a code of ethics that means they can't quote something that isn't sourced, whereas what I do is entirely unsourced. I effectively fictionalise history and yet somehow aim at a greater truth.
If you don't belong somewhere, that outsider status you have gives you perspective. Of course, another word for outsider is 'exile,' and that's not fun at all.
The film 'The Queen' came about with a producer saying to me that he wanted me to write about the circumstances behind Diana's death. I think he was hoping that I would come up with some journalistic scoop that would identify an MI5 covert plot.