Oaks Park High School front entrance was chosen as the main location because the storyline involves a schoolgirl and it would be easy to film after school hours. Oaks Lane was selected to show the girl's journey home from school and her vulnerability walking alone. Sainsbury's alleyway was picked for the final scene to imply danger and suspense as alleyways are often seen as dodgy. E14, the school's computer room, was also chosen so the protagonist could upload footage to YouTube at the end, and it would be empty after school for convenient filming.