London is a very energising place to be.

Its interesting to play a politician who gets stuff done.

A couple of clues came my way of what I might be getting myself into when I sat down with a number of actors who had played Richard III in the past. And I was hoping of course, that one of them or all of them were gonna give me the magic key, the secret way in to play Richard III but none of them did that.But every one of them did say the following, "Be careful."

I have talked to more people who are in politics who have said to me, "[House of Cards] is closer than you can imagine. It's the most accurate description of how politics actually works that we've ever seen." I mean, West Wing - beautiful, wonderful idea of how democracy should work. But I've had more people in politics say they think House of Cards is closer. I - don't know whether to take that as a compliment or a sad state of affairs.

You risk working with this director, you risk making this movie, you risk working with another actor you don't know. It makes your heart beat faster. And it keeps you interested.

There's something really incredible about watching what someone else does with a role that we know: the Hamlets or the Henry Vs or the Othellos or the Cleopatras that we've seen on stage.

Cable TV has become where the best actors, writers and directors have gone to work because they are allowed to do character-driven stories.