Gemma Whelan DS Sarah Collins Actor Tahirah Sharif PC Lizzie Adama Actor Jimmy Akingbola DC Steve Bradshaw Actor Emmett Scanlan DI Kieran Shaw Actor Niamh Cusack Claire Mills Actor Tamzin Outhwaite Cathy Teel Actor Camilla Beeput Julie Woodson Actor Bobby Lockwood DC Lee Coutts Actor Michael Karim PC Arif Johar Actor Shonagh Marie Marley Daniels Actor Stuart McQuarrie DCI Jim Fedden Actor Charley Palmer Rothwell Matthew Brannon Actor Ella Smith DC Elaine Lucas Actor Darren Swift Neil Slattery Actor Buckso Dhillon-Woolley Nabila Adama Actor Laurie Delaney Mary Shaw Actor Faith Delaney Skye Brannon Actor Robin Morrissey Sgt Fred Thompson Actor Jack Shalloo PC Colin Ryle Actor Andonis Anthony Derek Holt Actor Patrick Harbinson Writer, Executive Producer Kate London Writer, Executive Producer Faye Gilbert Director Andy Mosse Producer Sheena Bucktowonsing Executive Producer Damien Timmer Executive Producer Nainita Desai Original Music