Victoria Smurfit Hannah Randall Actor Tabitha Wady Lydia Weston Actor Clare Wilkie Matty Wickham Actor Rosemary Leach Nanny Collins Actor Ruth Sheen Nanny Simmons Actor Jason O'Mara Ned Jones Actor Etela Pardo Mrs. Bronowski Actor Kate Williams Mrs. McClusky Actor Hermione Norris Victoria St. John Actor Sean Murray Arnold St. John Actor William Scott-Masson Captain Mason Actor Rupert Frazer Lord George Lamson-Scribener Actor Briony Glassco Lady Constance Lamson-Scribener Actor Nicholas Irons Lord Hugh Lamson-Scribener Actor Stuart Laing Jack Wickham Actor Alison Davis Producer