I don't know if there will ever be an ideal way of selling an original picture. Because everything you're doing, you're inventing.

I loved Sherlock Holmes as a kid, but I remember being disappointed when he'd come up with these simple explanations for these complex mysteries.

Sixty-five days principle photography, five-day weeks, which is the only way I'll work. With my cinematographer Russell Boyd, we take as much time as possible before pre-production, looking at stills. The next most important thing: he will come to me and talk about lenses. And I'll see his plan, which is generally great, and I might talk about how the light will be, handheld or not? I talk very freely, and try not to talk specifically, just talk around it, because it can unlock all sorts of things.

I always thought the editor should cut the film and so I'll come in and look at the movie. Just because that's the only way I can really see the ideas of the editor, it's really working together. Yes it's a hierarchy, yes I'm the boss, but I like to see and to think about the idea, and it's about us asking, 'do we have to say that?' and, 'how do we make it there?' So it's advising the editor, it's very give and take, it's very free, but in the end, it's wonderful once you get through the first couple of cuts.

In 'The Way Back' survivors were all ordinary people, and that's the whole point, that's who I felt these people should be, and they shouldn't be that hero that stands out.

Id love to have another film to go on to. Im in the mood to work. But I have to be patient, you know, to find that particular kind of project. Occasionally Ill write one myself if I can summon up the energy.

In terms of how I work with actors, having worked so heavily on the script I have a very clear idea of the characters; they are reasonably well illustrated in the script. If you cast it right, to a great degree you can hand it over to the actor and I just make suggestions. I'm not the kind of director who needs or wants to get into too much finessing. Ideally, when you hit the set, you have this conversation, like, 'eh, what did you think?' 'I don't know, what did you think?' 'Why don't we just try it again, make a few physical changes.'