I like to be busy. I once shared an agent with the late Sir John Gielgud, who, at 96, was apparently still ringing up, saying, 'Hello, Gielgud here, any work?' Good on him. We've got to keep working. If we retire, there'll be nobody to play the old wrinklies, and that would be a dreadful shame.

I've never been one for late nights, which is why I have always preferred making films to theatre. A play takes over your life: you start to feel sick at lunchtime, and by mid-afternoon, you're wishing for a bomb scare so the whole thing will be called off. Of course, if the evening goes well and you get the applause, then it's wonderful.

Audiences seem to have a limitless appetite for vampires and for fantasy in general. Unlike many other British actors, I haven't been building up my pension appearing in films like 'The Lord of the Rings' and 'Harry Potter,' but fantasy has now got a grip on me. I am also appearing in 'Game of Thrones' as the head of the House of Lannister.

The quality of writing attracts me to films, also who the other actors are, who the director is, where it's being shot. Any or all of those things. But if the writing is really appalling, then the money had better be really good. Sometimes you say yes to something you wouldn't always do because you need the money.

Actors can't retire. If actors retired, there would be nobody left to play old, wrinkly people. You have to keep going, darling - don't you?

My mother was a waitress in a Lyons Corner House, but she married up. She was keen on bettering herself. She taught me how to use the right knives and forks and behave properly.

You should encourage a child to show off. You can say to a child, 'Stop being rude,' 'Stop shouting,' 'Stop jumping around on the furniture.' But 'Stop showing off'? That's awful.

Runners are the lowest of the low in film units. They're paid very, very minimal wages - probably below the national average. And runners are now being asked to drive actors about, as well as their runner duties. It's kind of the same as taking advantage of nurses - it's appalling.

People think I have the benefit of a public school education. I have this suave and debonair label, but really, I'm as common as muck.

I think it's counterproductive for actors to come to the set with well-thumbed copies of the book their film is adapted from.