I signed up to do three [seasons of Downton Abbey (2010)] and that was all I wanted to do. I had great fun doing it but I just didn't want to do it any more. I decided this before we even did the last series. When I stop loving something, I stop doing it
[on her character on Downton Abbey (2010)]: O'Brien is a thoroughly despicable human being - that was great to play.
'Downton' has really pushed me to a new level in my career, but it's not like I have a big career plan. They are about as useful as a birth plan; they should be burned.
Getting older has been a bonus for me. I feel lucky that parts are being written for someone my age and I am around to play them.
People tend to say, 'You're not as fat or as ugly as I expected.' I never know how to reply. It's a bit of a slap, but they don't mean it, I'm sure.