Guest Stars Vincent Regan as Dominic Carter Daniel Ezra as Dan Johnson Derek Riddell as Paul Brightman Shannon Hayes as Ella Johnson Tamara Lawrance as Clem Johnson Angel Coulby as Julia Redhead Alistair Petrie as Robert Greenlaw Mark Bonnar as John Halliday Leanne Best as Abigail Strickland Ṣọpẹ́ Dìrísù as Michael Antwi Sam Stockman as PC Rose Cecilia Noble as Mrs. Antwi David Schofield as Alex Brady Ian Peck as Peter Mackie Glyn Grimstead as Sgt. Douglas Trimble Nathan Nolan as Dr. Mark Ambrose Carmela Corbett as Lola