Film4 is a British digital television channel and film production company owned by Channel Four Television Corporation. It screens films and has produced many notable British films. In 2006, it moved from pay TV to free TV on Freeview and adopted an advertising model. As a film production company, one of Film4's challenges is competing for cinema space with large multinational studios. However, partnering with television allows for economies of scale and a wide audience. Well-known Film4 productions include Shaun of the Dead, Slumdog Millionaire, 127 Hours, and Trance. Tessa Ross is the controller of both Film4 and Channel 4 drama, and has executive produced several acclaimed British films that typically appeal to audiences aged 15