Emilia Fox Dr. Nikki Alexander Actor William Gaminara Leo Dalton Actor Tom Ward Dr. Harry Cunningham Actor William Armstrong Actor Sam Parks Actor Ruth McCabe Actor Ruth Gemmell Actor Jaye Griffiths Actor John McGlynn Actor Clare Higgins Actor Janice Acquah Actor Matthew Steer Actor Richard Huw Actor Nicola Redmond Actor Milo Twomey Actor Doreen Hepburn Actor Mick Ford Actor Chris Wilson Actor Ian Keith Actor Christine Tremarco Actor Richard Signy Director Renny Rye Director Michael Crompton Writer Nigel McCrery Writer Laura Mackie Executive Producer Jessica Pope Executive Producer Timothy Prager Writer Stephen Davis Writer Anthony Byrne Director Alex Pillai Director Tim Fywell Director Diarmuid Lawrence Director Richard Burrell Producer Susan Tully Director Christian Spurrier Writer Phillippa Giles Executive Producer Richard Davidson Writer Dudi Appleton Writer, Director Jim Keeble Writer