James Norton Sidney Chambers Actor Robson Green Geordie Keating Actor Morven Christie Amanda Kendall Actor Tessa Peake-Jones Mrs Chapman Actor Kacey Ainsworth Cathy Keating Actor Al Weaver Leonard Finch Actor Pheline Roggan Hildegard Staunton Actor Diederick Santer Executive Producer Daisy Coulam Writer Tim Fywell Director James Runcie Writer