Justin Edgar Director, Screenwriter, Producer Jamie Blackley Jack Actor Sean Teale Chunks Actor Mike Bailey Parsons Actor Michael Smiley Killer Colin Actor Amber Anderson Elinor Actor Adam Gillen Splodger Actor Dominic Coleman Mr. Parsons Actor Rosamund Hanson Clare Actor Alex Usborne Producer Gareth Jones Executive Producer Colin Pons Executive Producer Vincent Watts Original Music Felix Wiedemann Cinematographer Philip Arkinstall Film Editing Amanda Tabak Casting John Ellis Production Design Annabelle Bevan Art Director Heidi McQueen-Prentice Costume Design