Crispian Mills Director, Screenwriter Chris Hopewell Director, Production Design Simon Pegg Jack Actor, Executive Producer Amara Karan Sangeet Actor Clare Higgins Clair Actor Alan Drake Perkins Actor Paul Freeman Dr. Friedkin Actor Kerry Shale Harvey Humphries Actor Zaak Conway Young Jack Actor Henry Lloyd-Hughes PC Taser Actor Tuyet Le Warden Actor Jay Taylor Documentary Maker Actor Jane Stanness Sheena Actor Mo Idriss Mr. Rowntree Actor Elliot Greene Hoodie Actor Alice Orr-Ewing Lavinia Actor Geraldine Patten Producer Johnny Fewings Executive Producer Nick Smith Executive Producer Steve Norris Executive Producer Jasbinder Singh Mann Executive Producer Pat Savage Executive Producer Mick Southworth Executive Producer Simon Chaudoir Cinematographer Dan Roberts Film Editing Michael Price Original Music David Bryan Art Director Fran Cooper Set Decoration Louise Foley Costume Design Karen Lindsay-Stewart Casting