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