Sarah Alexander Angela Hunter Actor Oliver Chris Boyce Actor Michelle Gomez Sue White Actor Tamsin Greig Dr. Carolyn Todd Actor Pippa Haywood Joanna Clore Actor Mark Heap Alan Statham Actor Stephen Mangan Guy Secretan Actor Julian Rhind-Tutt Dr. "Mac" Macartney Actor Karl Theobald Martin Dear Actor Katie Lyons Naughty Rachel Actor Lucinda Raikes Karen Ball Actor Olivia Colman Harriet Schulenburg Actor Sally Bretton Kim Alabaster Actor Sally Phillips Holly Actor Tristram Shapeero Director Dominic Brigstocke Director Victoria Pile Writer Robert Harley Writer Gary Howe Writer Peter Fincham Executive Producer Stuart Kenworthy Writer Oriane Messina Writer Richard Preddy Writer Fay Rusling Writer James Henry Writer