Although the movie is set in Texas and Mexico, most of it was filmed in London and the Home Counties, with Scott using the multi-camera system he pioneered while filming live plays for the BBC. “In those days you would have six cameras all moving at once, so you are thinking in many layers. When I plan a film, I do the same thing,” he says. “Some people use one camera and the scene will take a day, but if I have four cameras it is so much more efficient. The actors love it because the cameras are moving all the time and I am not constantly saying 'cut’, 'next take,’ 'cut’. So each scene is like a small play.”