Gary Oldman Winston Churchill
Faye Marsay Sybil
Kristin Scott Thomas Clemmie
Lily James Elizabeth Layton
David Strathairn President Roosevelt (voice)
Stephen Dillane Viscount Halifax
Samuel West Sir Anthony Eden
Ben Mendelsohn King George VI
Pip Torrens BBC Producer
David Bamber Admiral Ramsay
Patsy Ferran Maid
Joe Wright Director
Joe Armstrong John Evans
Adrian Rawlins Air Chief Marshal Dowding
Tim Bevan Producer
Bronte Carmichael Young Girl on Tube
Joshua James W D Wilkinson (Secretary #2)
David Schofield Clement Atlee
James Harkness AD Nicholl (Secretary #1)
Richard Glover Brigadier Nicholson
Anna Burnett Pamela Churchill
Ronald Pickup Neville Chamberlain
Jeremy Child Lord Stanhope
Nicholas Jones Sir John Simon
Benjamin Whitrow Sir Samuel Hoare
Imogen King Teenage Girl at Tube Map
Dario Marianelli Original Music Composer
Malcolm Storry General Ironside
James Biddle Executive Producer
Philip Martin Brown Sawyers
Eric Fellner Producer
Thomas Dixon Assistant Production Coordinator
Jon Baker Armorer
Paul Ridley House of Commons Speaker
Demetri Goritsas Cabinet Secretary Bridges
Charley Palmer Rothwell Christopher Wilson (Photographer)
John Locke Oliver Wilson
Jack Ridout Lighting Technician
Sarah Flind Cook
Cristian Knight Stunts
Anthony McCarten Producer, Screenplay
Sarah Greenwood Production Design
Michael Bott Equerry
Thomas Napper Second Unit Director
Jina Jay Casting
Jeremy Braben Aerial Director of Photography
Hilton McRae Arthur Greenwood
Vanessa Baker ADR Voice Casting
Richard Lumsden General Ismay
Mark Appleby ADR Mixer
Johnny Otto Member of Parliament (uncredited)
Kazu Hiro Prosthetic Makeup Artist, Hair Designer
Bruno Delbonnel Director of Photography
Jordan Waller Randolph Churchill
James Eeles Maurice Baker
Jo Wallett Production Manager
Douglas Urbanski Producer
Leonard Woodcock Stunts
David Malinowski Prosthetic Makeup Artist
Olivier Broche Reynaud
Julian Bucknall First Assistant "A" Camera
Michael Gould Lord Londonderry
Brian Pettifer Lord Kingsley Wood
Hannah Steele Abigail Walker
Lisa Bruce Producer
John Casali Production Sound Mixer
Tom Edmondson Second Unit First Assistant Director
Jacqueline Durran Costume Design
Bethany Muir Sarah Churchill
Paul Cotterell Sound Re-Recording Mixer
Jo Neary Margaret Jerome
Paul Leonard Admiral Dudley Pound