Aimee-Ffion Edwards Sarah Adams Actor Jordan Bolger Connor Actor Aasiya Shah Laila Mahmood Actor Miriam Petche Carrie Symonds Actor Alexa Davies PC Stephanie Ellis Actor David Fynn DS Steve Warrilow Actor Laurie Kynaston Frankie Actor Rachael Stirling Phillippa Kaufmann QC Actor Philippa Dunne Harriet Wistrich Actor Daniel Mays John Worboys Actor Chris Donnelly Carrie's Boss Actor Kate Handford Cherry Actor Bryan Dick Psychologist Actor David Elliot Gavin Actor Gareth David-Lloyd Andy Fairbrother Actor Alex Price DI Stephen Underwood Actor Meg Basham PC Dawn Bolitho Actor Ed Eales White DC James Coldham Actor Ryan Davies Male Officer Actor David Ganly PC Wright Actor Liam Garrigan DI David Reid Actor Laurence Saunders Jeremy Johnson QC Actor Alice Barclay Female Psychiatrist Actor Nathan Sussex Male Psychiatrist Actor Carter Pingue Jack Actor Phoenix Symes Lenny Actor Simon Armstrong Vicar Actor Taheen Modak Arham Actor Kammy Darweish Latif Actor Sudha Bhuchar Salma Actor Neelam Bakshi Huda Actor Abigail Davies Dr Jackie Craissati Actor Martin Walsh Prisoner Actor Alfie Wilson Older Jack Actor Leo Symes Older Lenny Actor Mathilde Wookey-rothwell Abbie Actor Theo Fraser Steele David Gauke MP Actor Dean Graham Prison Warder Hayden Actor William Oxborrow Edward Fitzgerald QC Actor Jeff Pope Writer, Executive Producer Saurabh Kakkar Executive Producer Catrin Lewis Defis Producer Julia Ford Director