I was never really that interested in the punk movement. I was a blues guy: I liked Motown, James Brown.

There will always be spies. We have to have them. Without them we wouldn't have got Osama bin Laden - it took us years, but it happened.

I wasn't ever a huge fan of comics. Just not one of those kids, you know?

I tend to read non-fiction.

Well, I needed the work - that's the honest answer. I haven't worked for a while, a couple of years. So I thought it would be nice to get back to work and earn some money.

And of course I've got kids of my own now, and they love me being in the Harry Potter films. I'm now part of a phenomenon. You become incredibly cool to your kids, and you get a young fan base. So you became the cool dad at school. You're suddenly hip.

At the Oscars, if you didn't vote for '12 Years a Slave' you were a racist.