 In September 2013, Vaughn cast Sophie Cookson for the female lead, preferring a newcomer over more obvious candidates like Emma Watson and Bella Heathcote.Mark Hamill was cast as Professor James Arnold, a reference to his character in the source comic book being himself.Principal photography began 6 October 2013 in Deepcut, Surrey, on a budget reported to be one-third of the $200 million budget of "Skyfall".