William Gaminara Prof. Leo Dalton Actor Tom Ward Dr. Harry Cunningham Actor Emilia Fox Dr. Nikki Alexander Actor Arsher Ali Actor Jaye Griffiths Actor Mark Benton Actor Christine Tremarco Actor Tony Pitts Actor Simon Kunz Actor Charlie Creed-Miles Actor Steven Harwood-Brown Actor Roy Sampson Actor Barbara Flynn Actor Keith Bartlett Actor Antony Byrne Actor Robert Lonsdale Actor Sean Baker Actor Samantha Seager Actor Peter Charlton Actor Laura Mackie Executive Producer Jessica Pope Executive Producer Anthony Byrne Director Richard Burrell Producer Richard Davidson Writer Oliver Brown Writer Michael Crompton Writer Keith Boak Director Phillippa Giles Executive Producer