I adore Bette Davis and Vivien Leigh, but more because they were good actresses. That’s what makes me interested in them, that they didn’t present themselves as idols; they were just doing their jobs.

Having a child makes you strong and gives you chutzpah. It relaxed my attitude to the job; my center of focus shifted, which I think is very helpful, because even if you're not a very indulgent actor you spend a lot of time thinking about yourself. I don't think that is particularly healthy.

Her death has had a huge effect on me. It felt like a big hole appeared on my left side - apparently your left side is your mother - which I thought could never be filled. Now I think what you have to do is fill it with yourself because your mother is part of you. I'm easing into that space, using it and being comforted by it.

I don't feel the need for religion. But I went on a yoga retreat last year and I do believe slightly in the karma thing and just being good and true unto yourself. And I slightly believe that you can attract good and bad to you.

At the time of Woodstock, I was just 13, but I used to see these exotic hippy creatures and I did look on with envy. How could you not? In an ideal world, I would have loved to have been a hippy - but I might have been a bit strait-laced. It was my fantasy.

I don't think it's that I don't like Sondheim. It's that I find it really... I don't know how to describe it. Doing it is the most extraordinary thing. Because it's like Shakespeare times 100 with singing. It's that satisfying - and that demanding.

I worked in rep for six years, then I came to London and to the National Theatre. What's better than that