Colin Firth Ewen Montazac Matthew Macfadyen Charles Cholmondeley Kelly Macdonald Jean Leslie Penelope Wilton Hester Leggett Johnny Flynn Ian Fleming Jason Isaacs Admiral John Godfrey Mark Gatiss Ivor Montazac Hattie Morahan Iris Montazac Paul Ritter Bentley Purchase Simon Russell Beale Winston Churchill Lorne MacFadyen Sgt. Roger Dearborn / Glyndwr Michael Markus von Lingen Adolf Clauss Ruby Bentall Connie Bukes Alex Jennings John Masterman Ellie Haddington Hilda Georgina Cholmondeley Nicholas Rowe Capt. David Ainsworth Will Keen Salvador Gomez-Beare Mark Bonnar Jock Horsfall James Fleet Charles Fraser-Smith Alexander Beyer Karl Kuhlenthal Pep Tosar Admiral Moreno Pedro Casablanc Dr. Del Torno Óscar Zafra Colonel Cerruti Javier Godino Judge Pascual del Pobil Jonjo O'Neill Teddy Amy Marston Nurse Tate Gabrielle Creevy Doris Michael Simon Rouse Coroner Birtwistle Paul Lancaster Coroner Pinfield Michael Bott Frank Sawyer (Churchill Butler) Charlotte Hamblin Patricia Trehearne Rufus Wright Lt. Bill Jewell