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.

Ultimately, we are all products of the experiences we have and the decisions we make as children, and it remains a peculiar detail of human condition that something as precious as the future is entrusted to us when we possess so little foresight. Perhaps that's what makes hindsight so intriguing. When you're young the future is a blank canvas, but looking back you are always able to see the big picture.

Having done Spaced, I can't even remember it being that difficult on Spaced, but we know what the end's going to be like. We know why we're putting in this amount of work, or why a shot might be particularly tricky, because we know that what we do is create a whole package. It's the writing, the performances, and the style of camerawork, that's what we're working toward, and we're prepared for that.

Nira Park, who is my longtime producer and friend - I've know her since we did Spaced, the TV show - she gave me this script the last day of filming The World's End. She said, "Take a look at this. It's filming in London next year, and you might like to look at Jack." I trust Nira implicitly.

In the most basic terms it was about how when we experience art without critical awareness we consent to the ideas being promoted, either intentionally or unintentionally, by the filmmaker. For instance, if you watch a racist comedian and laugh at his jokes, you are consenting to the prejudices inherent within them. Similarly, if you watch a movie which perpetuates conventional ideas about race, gender, etc., you are consenting to them and not affecting change in any way.

If I was a supervillain, I think I'd probably ban all smoking and drinking. That's exactly what I'd do: I'd remove all the cigarettes and alcohol from the world. That would piss so many people off. That's worse than, like, murdering puppies. For some people.

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.