Guest Stars Adeel Akhtar as Hassan Mahmoud Rosie Cavaliero as Marion Kelsey Lorraine Ashbourne as DI Tessa Nixon Mark Bonnar as Colin Osborne Nigel Lindsay as Tony Kelsey Badria Timimi as Sara Mahmoud Charlie Condou as Simon Will Brown as Jason Walker Amy Jayne as Flo Josef Altin as Tyler Douglas Hodge as Paul Nixon Emma Cunniffe as Janet Jodie Tyack as Zoe Daniel Gosling as David Walker Nathalie Armin as DSI Kuldip Gill Alan Asaad as Yousef Mahmoud Katherine Jakeways as Nicola Wendy Craig as Joy Dunphy Munir Khairdin as Omar Holly Aird as Elise Dominique Drew as Becca Nixon Tony Gardner as Hugh Moray Richard Hope as James Gregory