Lily James Elizabeth Layton
Jack English Still Photographer
Dario Marianelli Original Music Composer
Kristin Scott Thomas Clemmie
Gary Oldman Winston Churchill
Aaron Hartley Second Assistant Director
Rachel Desmarest Additional Casting
Louis Phillips Executive In Charge Of Production
Charlotte Llewelyn Digital Intermediate Producer
Jeremy Child Lord Stanhope
Pip Torrens BBC Producer
Mary Antony Mary Churchill
Samuel West Sir Anthony Eden
Joe Armstrong John Evans
Sarah Flind Cook
Douglas Urbanski Producer
Peter Marsden Digital Imaging Technician
Stephen Dillane Viscount Halifax
Faye Marsay Sybil
Nia Gwynne Alice Simpson
Alex Clatworthy Diana Churchill
Ben Mendelsohn King George VI
David Strathairn President Roosevelt (voice)
Johnathan Rush Sound Mix Technician
Johnny Otto Member of Parliament (uncredited)
Michael Bott Equerry
Bronte Carmichael Young Girl on Tube
Robin Pearce Ernle Hastings
Hannah Steele Abigail Walker
Tom Ashley Ramsay Staffer
David Bamber Admiral Ramsay
Paul Leonard Admiral Dudley Pound
John Atterbury Sir Alexander Cadogan
Thomas Napper Second Unit Director
Ronald Pickup Neville Chamberlain
Joe Wright Director
Demetri Goritsas Cabinet Secretary Bridges
David Schofield Clement Atlee
Benjamin Whitrow Sir Samuel Hoare
Nicholas Jones Sir John Simon
Hilton McRae Arthur Greenwood
Ivana Primorac Makeup Designer, Hair Designer
Philip Martin Brown Sawyers
Ian Creed Marine Coordinator
Malcolm Storry General Ironside
Kazu Hiro Hair Designer, Prosthetic Makeup Artist
John Locke Oliver Wilson
Sarah Greenwood Production Design
James Harkness AD Nicholl (Secretary #1)
Tim Bevan Producer
Patsy Ferran Maid
Adrian Rawlins Air Chief Marshal Dowding
John Casali Production Sound Mixer
Anna Burnett Pamela Churchill
Joshua James W D Wilkinson (Secretary #2)
Yan Caspar Hirschbuehl VFX Artist
Phoebe Fraser Digital Imaging Technician
Flora Moody Key Makeup Artist, Key Hair Stylist
Paul Cotterell Sound Re-Recording Mixer
Richard Glover Brigadier Nicholson
Julian Bucknall First Assistant "A" Camera
Brian Pettifer Lord Kingsley Wood
Cristian Knight Stunts
Stephane Naze Visual Effects Supervisor
Jeremy Braben Aerial Director of Photography
Jo Neary Margaret Jerome
Lottie Geliot Art Department Assistant
Imogen King Teenage Girl at Tube Map
Keith Partridge Foley Mixer
Ane Stubberud Assistant Accountant
Jacqueline Durran Costume Design
Jo Wallett Production Manager