Ross Devenish Director Holly Aird Juanita Carberry Actor Denholm Elliott Sir Henry "Jock" Delves Broughton Actor Kathryn Pogson June Carberry Actor Michael Byrne John Carberry Actor Cathryn Harrison Helen Tapsell Actor Amanda Hillwood Lady Diana Delves Broughton Actor Peter Sands Lord Erroll Actor Richard Heffer Asst Supt Poppy Actor David Reid Writer Cedric Messina Producer Chris Cherry Associate Producer Geoffrey Burgon Music