Emilia Fox Dr Nikki Alexander Actor Richard Lintern Dr Thomas Chamberlain Actor David Caves Jack Hodgson Actor Liz Carr Clarissa Mullery Actor Douglas Rankine Di Paul Renick Actor Nathalie Buscombe Lucy Chatham Guest Star Gary Beadle DCI Tony Underhill Guest Star Bartley Burke Shaun Cohen Guest Star Rebecca Calder DI Jodie Tanner Guest Star Pippa Duffy Alice Guest Star Kevork Malikyan Varkey Khoury Actor Tom Carter Young Aaron Logan Guest Star Chris Gordon Frankie McAteer Guest Star Harris Dickinson Aaron Logan Guest Star Daisy Edgar-Jones Jessica Timpson Guest Star Gerald Kyd Yusef Hamed Actor Lisa Kay Carol McAteer Guest Star Alex Felton Jasper Lampton Guest Star Hamza Jeetooa Kalil Aziz Actor Mufrida Hayes Jean Guest Star Anne Pivcevic Executive Producer Ceri Meyrick Director Ed Whitmore Writer Graham Mitchell Writer Richard Davidson Writer Timothy Prager Writer David Richards Director Thaddeus O'Sullivan Director David Drury Director Dudi Appleton Writer, Director Stewart Svaasand Director Jim Keeble Writer Juan Cano Nono Executive Producer