I don't particularly enjoy watching films in 3D because I think that a well-shot and well-projected film has a very three-dimensional quality to it, so I'm somewhat sceptical of the technology.

In Hollywood there's a great openness, almost a voracious appetite for new people. In England there's a great suspicion of the new. In cultural terms, that can be a good thing, but when you're trying to break into the film industry, it's definitely a bad thing.

Say you have a headline like "Mountain Bike Stolen," and then you read the story, read another story about it the next day, and then the next week, and then the next year. News is a process of expansion, the filling in of detail, and making narrative connections - not based on chronology, but based on features of the story. There are narrative connections made between props, between characters, between situations, and so forth.

Particularly, the actors, to have analyzed the script in great detail from the point of view of their specific character. So that they have a handle on exactly where the character is in the chronology of things. In that sense the actors become your best check on the logic of the piece, and the way in which it all fits together. They become essential collaborators. The main thing is you have to work with very smart actors.

What I try to do is write from the inside out. I really try to jump into the world of the film and the characters, try to imagine myself in that world rather than imagining it as a film I'm watching onscreen. Sometimes, that means I'm discovering things the way the audience will, with character and story.

Well, you always discover a lot in the editing room. Particularly the action, because you have to over-shoot a lot and shoot an enormous amount of material because many of the sequences have to be discovered in the editing and manipulation of it.

You always have to be very aware that the audience is extremely ruthless in its demand for newness, novelty and freshness.