It’s interesting because it’s a really changed dynamic. It’s very funny, there’s a lot of bickering. There’s no one that can wind her up as much as this Doctor can, because he’s just a loose cannon. He has this mad curiosity. It puts Clara out of her comfort zone and totally out of control, so we see the control freak in her really ramp up. What I think is really good about it is it’s an unlikely friendship. Even if she wanted to leave she can’t, because she’s bonded to him. He absolutely infuriates her. He annoys her. No one else can wind her up quite like it – but she just loves him. The friendship is strange and charming.