Guest Stars Adeel Akhtar as Hassan Mahmoud Mark Bonnar as Colin Osborne Lorraine Ashbourne as DI Tessa Nixon Nigel Lindsay as Tony Kelsey Charlie Condou as Simon Rosie Cavaliero as Marion Kelsey Badria Timimi as Sara Mahmoud Will Brown as Jason Walker Amy Jayne as Flo Josef Altin as Tyler Douglas Hodge as Paul Nixon Bryony Hannah as Cath Daniel Gosling as David Walker Mohammed Amiri as Ali Mahmoud Alan Asaad as Yousef Mahmoud Nathalie Armin as DSI Kuldip Gill Katherine Jakeways as Nicola Munir Khairdin as Omar Dominique Drew as Becca Nixon Amir Mime as Ahmed Mahmoud Hannah Traylen as Jasmine Shaheen Khan as GP Kathleen Fraser as School Secretary Teresa Churcher as Estate Agent Alistair Kirton as Jason's Boss Linal Haft as Jacob Rose Sirine Saba as Samir Khan