Not a lot of people know this, but I'm very good at mathematics. When I was an angry teenager, I used to sit in my room and do quadratic equations to calm myself down.
'Downton' is one of the best jobs in the world, and I'm looking forward to the next series for Maggie Smith's wicked sense of humour.
Filming is quite exciting because every day is different, but it can involve long hours standing around in chilly locations. Theatre is a very different challenge because every night you're striving to keep it fresh, even though you might have been performing the same play for months.
I always have bananas with me for energy.
I tend to opt for relaxed family holidays when I can.
My best friend is my husband.
I lost a girlfriend when I was in my 30s. She was 46. It all sounds so trite, but I put a Post-it on my dressing-room wall. It said, 'The past is history. The future is a mystery. This moment is a gift, which is why it's called the present.'
It's always been a dream of mine to be Ginger Rogers or Cyd Charisse, and here I am performing alongside Robert Lindsay and being directed by a major Broadway producer. Who said dreams don't come true?
Something like 'Sex And The City' was insulting - women all clawing on to their youth when there's such ripe territory in honestly exploring women's lives as they get older.
I had absolutely no idea of the scale of its following and the globalness of 'Bond'.
I've always had this sneaking suspicion that I get a kick out of the insecurity.
I have to be careful what I eat before going onstage, to avoid an upset stomach.
I managed to slip two children out in the middle of my career and have been lucky with all the work.
I think that as you get older, you become aware of everything that could go wrong.
I've been married to the same man - even after the separation - longer than most people in this business. I'm sick to death of people mentioning it.
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