Showing young children in these communities, that there are outlets for their feelings, that there is room in a space for their stories to be told, and that they will be applauded - and it's not about ego, it's about connection: that their pain is everybody else's pain.

I think that is so interesting. It is le Carré. There must be so much of him when he was younger. He's an interesting character. I don't want to say the word "passive" because there is something very active about the way he is passive, if that makes any sense: the nature of his watching and his listening is active. It is always so alive because he is, essentially, a spy.

I thought theater people wouldn't see me if I hadn't trained. I didn't want to just be the Brideshead guy, to spend the rest of my life wearing waistcoats. I got the chance to try everything. Not just Romeos, but pimps and grandfathers and even one role as a woman in a Naomi Wallace play called Slaughter City.

Never, ever, let anyone tell you what you can and can't do. Prove the cynics wrong. Pity them for they have no imagination. The sky's the limit. Your sky. Your limit. Now. Let's dance.

Every time you consider a job, you have to check in with your inner compass and say, ‘Does this fit in with how I see what the work is for? Is this going to be something interesting and valuable to contribute to the world?’

I learn the lines as soon as I can and then the challenge really, for filming, is to show up and be there and respond to what's around you. That's where the gold dust is. It's really strange, no amount of preparation will help you with the magic of spontaneity on the day [of filming].

Joanna points her camera at a section of society unused to having cameras pointed at it. But I don't know about categorising them in terms of class; I'm a bit wary of that. My dad is the son of a shipbuilder.