Guest Stars Jassa Ahluwalia as Adam Stuart Adeel Akhtar as Hassan Mahmoud Mark Bonnar as Colin Osborne Badria Timimi as Sara Mahmoud Nigel Lindsay as Tony Kelsey Lorraine Ashbourne as DI Tessa Nixon Rosie Cavaliero as Marion Kelsey Charlie Condou as Simon Will Brown as Jason Walker Aasiya Shah as Gemma Khan 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 Katherine Jakeways as Nicola Mohammed Amiri as Ali Mahmoud Alan Asaad as Yousef Mahmoud Munir Khairdin as Omar Dominique Drew as Becca Nixon Amir Mime as Ahmed Mahmoud Maggie O'Neill as Ellen Price Tony Gardner as Hugh Moray Yusuf Hofri as Mustafa Lauren Trickett as Flo's Mother Makir Ahmed as Aryan Eliza Hunt as Dinner Lady Moses Adejimi as Jamal Mika Simmons as Chambers' Secretary William Ely as Charity Worker Mairead McKinley as Sinead Quinn