It was lucky that Ralph [Fiennes] is someone who understands both film and theater and we were able to understand that scene so well before we took it to the set.

As a child, I always liked dressing up and getting into character, and actors are lucky in being able to retain that playfulness, though we do seem to find it hard to grow up.

I made a film called "The Theory of Everything," which is based on Jane Hawing, who was married to Stephen Hawking - it's based on her book about their relationship.That's what the film will be about - they were both incredible, strong, willful individuals and I feel like that Stephen Hawking himself would say that he wouldn't have survived without the influence of Jane Hawking, and they were an incredible team together.

My most treasured item is the brown leather bag that my mum bought me from a little Italian shop for my 21st. It's supposed to be a vanity bag, but I use it as a handbag.

It can be very intense being an actor; it can be quite a small world. Then you speak to your friend who is a scientist and they have a completely different perspective.

I feel like with acting it's not like you make a choice - it's kind of in you and you have to do it or you wouldn't be able to survive.

Of everything I have done, 'The Archers' always gets the most excitement; there's a sort of uncontrollable joy from fans of the program.