The work my mum does, a lot of it is re-housing homeless people, that's a real job. I play make-believe and dressing up for a living!

I'd love to get fat on camera. Wouldn't that be great? I'll tell you what's almost as hard though, getting bulked up, getting that big. Here we are in LA and you see guys walking down the street and everyone looks like Arnold Schwarzenegger. That's really quite grim, if you haven't done it before.

I always wonder whether I'll get treated differently with a different accent.

All actors have to change their name.

On the whole, British actors star in theater, and I think there's something quite grounding about that.

I've been very reluctant on the Twitter front. But I do Instagram now, so I'm slowly coming around. I'm quite a private person, so much of what I do for my job means that I have to be quite public so I'm just nervous about everything being public. I might turn around. Three years ago, I was against all social media but I actually really enjoy Instagram now. Who knows? I never say never!

I'm the biggest Chekov fan - there's something that he does that not many other writers do.