James Norton Sidney Chambers Actor Robson Green Geordie Keating Actor Tessa Peake-Jones Mrs Chapman Actor Kacey Ainsworth Cathy Keating Actor Al Weaver Leonard Finch Actor Simona Brown Violet Todd Actor Nicholas Rowe Rupert Simpson Actor Patrick Baladi Archer Davis Actor Bradley Hall Larry Peters Actor Felix Scott Sean Donovan Actor Katie Clarkson-Hill Sadie Parker Actor Kirsty J. Curtis Peggy Actor Diarmaid Murtagh Rory Dale Actor Holly Aston Ava Holmes Actor Sofia Oxenham Lottie Actor Daisy Coulam Writer Emma Kingsman-Lloyd Executive Producer John Lunn Original Music Tim Fywell Director Richard Cookson Producer