Guest Stars Samuel Barnett as Ryan Edwards Alexa Davies as Kiera Leanne Best as Kate Isabella Laughland as China Michael Jibson as DC Paul Slaymaker Memet Ali Alabora as Sami Sak Giselle Cullinane as Barbara Denham Kris Hitchen as Tom Shaun Thomas as Paul Ben Cartwright as Det Sgt Martin O'Donnell Kate Layden as Sandra Tim Preston as Anthony Walgate Ian Puleston-Davies as Karl Turner MP Dean Fagan as Deptford Police Officer Jakub Svec as Gabriel Kovari Dan Linney as Front Desk Officer Rufus Wright as Interviewing Detective Michael Keogh as Dispatcher Rachel Dale as Hull Police Officer Frankie Wilson as Barking Police Officer 1