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 David Schofield as Alex Brady Cecilia Noble as Mrs. Antwi Nathan Nolan as Dr. Mark Ambrose Oliver Dimsdale as Mark Neame Carmela Corbett as Lola