Emilia Fox Dr Nikki Alexander Actor David Caves Jack Hodgson Actor Richard Lintern Dr Thomas Chamberlain Actor Liz Carr Clarissa Mullery Actor Charlie Creed-Miles Conor Flannery Actor Sara Powell Tilly Maddox Actor Rosie Jones Serena Prentice Actor Stephanie Carey Jackie McDowd Actor Jenny Galloway Rosie Blakefield Actor Tom Hanson Mark Button Actor Finlay Robertson Edward Fielden Actor Sam Bond Andy Fielden Actor Ian Burfield DI Alex Hunter Actor Timothy Prager Writer Kiaran Murray-Smith Producer Thaddeus O'Sullivan Director Richard Stokes Executive Producer