I think age is sometimes just a number. But it's a real joy. Young actors don't come with any of the baggage that we load ourselves up with. They're not worried about their profile, they're not worried about how good they look, or all the nonsense. They just tell the story and ask: "What happens in this scene?" Well, I'll do that then. And professionally it's good for you because it means that you're forced to do the same thing, and that's always a good thing.

I think it helps to have a good old-fashioned trajectory, plodding along. Obviously one has an ego and it's really easy to have that ego tickled, but what helps me get through the night is if I concentrate on just quality of work so that I don't panic about my profile.

As I get older, I want to draw on my experience to make roles better. I see that in the older women who inspire me - their experience makes them better.

You just grow up and learn to think instead of just feel.

I just would like to keep going. If I kept getting the kind of work that I've been getting for the last 20 years for the next 20, I'd be a bloody Dame of the British Empire. I'd be so happy.

For actors, being successful is generally getting a job. If you can work a lot, you're really successful. If you work a lot on projects that are interesting and intelligent and great fun to be part of, then you're hugely successful. And I feel hugely successful. I can't believe that I get to be involved with the projects and the people I work with.

I didn't really know anything about Margot Fonteyn. I'd never really been a ballet child, so I had no idea what an incredibly huge icon she was, not just in terms of a creative icon - she was also a style icon. I had no idea she was up there with Audrey Hepburn and Jackie Onassis in terms of that kind of image.