Othello' was my first Shakespearean discovery. I was obsessed with drama at school, and I studied the play for my English GCSE. Desdemona is the part that everyone wants, but Iago's wife Emilia is the one I've always been drawn to.

For years, I was often afraid to speak up when I didn't fully understand a script. I'd tie myself in knots.

When I was a child, I went to stage school three times a week in the evenings - singing, ballet, tap, modern and acting, and I loved it.

I come from a very working-class background, so my family would have been downstairs in the past, as opposed to upstairs. People are often quite surprised to hear that, that I'm not actually posh.

I think the success of 'Downton' is partly because there are effectively 18 leading characters, all given equal importance, so it's enormously involving on many levels. But also, it's a new story. It's not like Dickens or Austen, where everyone knows the denouement.

I can be so blown away by story lines.

'Downton Abbey' has become this huge thing, and I really enjoy the success of it, but I sometimes find myself on the outside looking in, which is sort of a healthy way to look at it so you don't get too caught up in it.