Films that rely on their cast to be funny are often episodic and feel like a series of loosely connected sketches rather than a satisfyingly structured script.

The thought of filming in London was a big draw because I could stay in my house. I read it, and I was really taken with it because it felt at once very unapologetic for what it was, which is a romantic comedy. But at the same time, a little spiky and a little truthful.

When you meet people that you know from other films - as often happens to me, and as tends to happens to you when you're an actor, you constantly meet people that you've seen in other films. But when it's people who've kind of had a seismic effect on your life, it's quite extraordinary.

I just love listening to the laughter.

Every person should have their escape route planned. I think everyone has an apocalypse fantasy, what would I do in the event of the end of the world, and we just basically - me and Nick - said what would we do, where would we head?

Films used to be about challenging, emotional journeys or moral questions that might make you walk away and re-evaluate how you felt about... whatever. Now we're walking out of the cinema really not thinking about anything, other than the fact that the Hulk had a fight with a robot.

The nuts and bolts of shooting a film and writing a film are still really difficult. But what makes it easier is the fact that you know you're going to go to work with your best mate.