Babak Anvari Director, Writer Kelly Macdonald Lizzie Actor George MacKay Toby Actor Percelle Ascott Jay Actor Varada Sethu Naz Actor Hugh Bonneville Sir Hector Blake Actor Gabriel Bisset-Smith Dave Colombo Actor Antonio Aakeel Actor Lee Byford Detective Actor Paddy Wallace C.I.D Officer Jeff Actor Amerjit Deu Naz Father Actor Marilyn Nnadebe PC Hunter Actor Micky McGregor PC Carlo Rubio Actor Alicia Ambrose-Bayly Officer Vanessa Ceesay Actor Edward Wolstenholme Actor Michelle Thomas Party Guest Actor Guy Robbins Car Driver Actor Namsi Khan Writer Lucan Toh Producer Daniel Battsek Executive Producer Nate Bolotin Executive Producer Ollie Madden Executive Producer Yariv Milchan Executive Producer Michael Schaefer Executive Producer Aram Tertzakian Executive Producer Kit Fraser Cinematographer Matyas Fekete Film Editor Isobel Waller-Bridge Original Music