History keeps her secrets longer than most of us. But she has one secret that I will reveal to you tonight in the greatest confidence. Sometimes there are no winners at all. And sometimes nobody needs to lose.

Most people like to read about intrigue and spies. I hope to provide a metaphor for the average reader's daily life. Most of us live in a slightly conspiratorial relationship with our employer and perhaps with our marriage.

Novelists are not equipped to make a movie, in my opinion. They make their own movie when they write: they're casting, they're dressing the scene, they're working out where the energy of the scene is coming from and they're also relying tremendously on the creative imagination of the reader.

It's part of a writer's profession, as it's part of a spy's profession, to prey on the community to which he's attached, to take away information - often in secret - and to translate that into intelligence for his masters, whether it's his readership or his spy masters. And I think that both professions are perhaps rather lonely.

The Secret Intelligence Service I knew occupied dusky suites of little rooms opposite St James's Park Tube station in London.