Gary Oldman Winston Churchill
Lily James Elizabeth Layton
Ben Mendelsohn King George VI
David Strathairn President Roosevelt (voice)
Kristin Scott Thomas Clemmie
Samuel West Sir Anthony Eden
Stephen Dillane Viscount Halifax
Faye Marsay Sybil
Pip Torrens BBC Producer
Joe Wright Director
Adrian Rawlins Air Chief Marshal Dowding
David Bamber Admiral Ramsay
David Schofield Clement Atlee
Bronte Carmichael Young Girl on Tube
Tim Bevan Producer
Sarah Flind Cook
Patsy Ferran Maid
Bruno Delbonnel Director of Photography
Benjamin Whitrow Sir Samuel Hoare
Jina Jay Casting
Philip Martin Brown Sawyers
Nicholas Jones Sir John Simon
Joshua James W D Wilkinson (Secretary #2)
Thomas Napper Second Unit Director
Joe Armstrong John Evans
Imogen King Teenage Girl at Tube Map
Demetri Goritsas Cabinet Secretary Bridges
Ronald Pickup Neville Chamberlain
Paul Ridley House of Commons Speaker
Charley Palmer Rothwell Christopher Wilson (Photographer)
Malcolm Storry General Ironside
James Eeles Maurice Baker
Brian Pettifer Lord Kingsley Wood
Cristian Knight Stunts
Richard Lumsden General Ismay
Richard Glover Brigadier Nicholson
Jeremy Child Lord Stanhope
Jacqueline Durran Costume Design
Kazu Hiro Hair Designer, Prosthetic Makeup Artist
Julian Bucknall First Assistant "A" Camera
Hannah Steele Abigail Walker
Anna Burnett Pamela Churchill
Douglas Urbanski Producer
James Harkness AD Nicholl (Secretary #1)
Eric Fellner Producer
Sarah Greenwood Production Design
Anthony McCarten Producer, Screenplay
John Locke Oliver Wilson
Bethany Muir Sarah Churchill
Tommaso Gallone First Assistant Editor
Dario Marianelli Original Music Composer
Paul Leonard Admiral Dudley Pound
Ivana Primorac Hair Designer, Makeup Designer
Jacqueline Rathore Hairstylist
Jordan Waller Randolph Churchill
Netty Chapman Assistant Set Decoration
Hilton McRae Arthur Greenwood
Paul Cotterell Sound Re-Recording Mixer
Jessie Frost Casting Associate
Chris Murphy Boom Operator
Mary Antony Mary Churchill
David Malinowski Prosthetic Makeup Artist
John Casali Production Sound Mixer
Joshua Jason Publicist
Des Whelan Camera Operator
John Atterbury Sir Alexander Cadogan
Olivier Broche Reynaud
Chris Robins Sound Mix Technician
Jeremy Braben Aerial Director of Photography
Johnny Otto Member of Parliament (uncredited)
Dale Walters Props
Craig Berkey Sound Re-Recording Mixer, Supervising Sound Editor