My dad, Donald, was a vet and had a practice in Yorkshire. Cats and dogs were his bread and butter, but his greatest love was large animals.

Friends have suggested that I am the least qualified person to talk about happiness, because I am often down, and sometimes profoundly depressed. But I think that's where my qualification comes from. Because to know happiness, it helps to know unhappiness.

Tony [Blair] slowly sucked me back in for the 2005 campaign, and from six months out, I was basically working full time trying to keep the Tony[Blair] - Gordon[Brown] thing together for the campaign. It was awful.

In an ideal world, it would not take a film star to get the media focused on mental illness.

Paul Keating told us before we were elected that you can do deals with [Rupert] Murdoch without saying you were doing a deal. Did we do that kind of thing? Maybe. But from around about the turn of the century, I felt strongly that we had to do something about media ownership and self-regulation. Tony [Blair] disagreed.

I do think it's strange that I get associated with Iraq more than the people who were Foreign Secretary or Defence Secretary. It's because of my closeness to Tony [Blair], which I don't regret at all. I think that was a privilege.

I want to write more books, see my first novel made into a film, fight more campaigns, work in more countries. I want to be able to recall experiences that have endured for their pleasure and range and intensity.