One of the things I really love about 3D is that because as we grow older on eye weakens more than the other, 3D becomes more difficult for adults to watch than it is for children who have very balanced eyes often.

3D doesn't work quite so well with quick cuts and I probably would have done some longer takes had I really taken that information onboard.

I went to comprehensive school in North London and left without any qualifications [diploma]. And I was doing bits of acting and improv in a drama club in the evenings. Then I discovered you didn't need qualifications to go to art school, you just needed a body of work.

I've been lucky over the past few years. Things have just happened for me.

I'm quite spontaneous in my decisions often. Your career is kind of what happens whilst you're busy developing other screenplays, and so it came out of the blue.

There's good art and there's bad art. A lot of action films are bad art, but Paul Greengrass showed us with the Bourne films that it's possible to make an action film with a political, social conscience.

Every time I make a film, I feel it gives me the chance to learn something new.