In May 1940, the fate of World War II hangs on Winston Churchill, who must decide whether to negotiate with Adolf Hitler or fight on knowing that it could mean the end of the British Empire.
Gary Oldman Winston Churchill
Stephen Dillane Viscount Halifax
Lily James Elizabeth Layton
Ronald Pickup Neville Chamberlain
Ben Mendelsohn King George VI
Kristin Scott Thomas Clemmie
Nicholas Jones Sir John Simon
Samuel West Sir Anthony Eden
David Schofield Clement Atlee
Richard Lumsden General Ismay
Malcolm Storry General Ironside
Hilton McRae Arthur Greenwood
Benjamin Whitrow Sir Samuel Hoare
Joe Armstrong John Evans
Adrian Rawlins Air Chief Marshal Dowding
David Bamber Admiral Ramsay
Paul Leonard Admiral Dudley Pound
David Strathairn President Roosevelt (voice)
Eric MacLennan Tom Leonard
Philip Martin Brown Sawyers
Demetri Goritsas Cabinet Secretary Bridges
Jordan Waller Randolph Churchill
Alex Clatworthy Diana Churchill
Mary Antony Mary Churchill
Bethany Muir Sarah Churchill
Anna Burnett Pamela Churchill
Jeremy Child Lord Stanhope
Brian Pettifer Lord Kingsley Wood
Michael Gould Lord Londonderry
Paul Ridley House of Commons Speaker
Robin Pearce Ernle Hastings
Michael Bott Equerry
Olivier Broche Reynaud
Mario Hacquard Daladier
Pip Torrens BBC Producer
Edmund Wiseman Actor
Hannah Steele Abigail Walker
Nia Gwynne Alice Simpson
Ade Dee Haastrup Marcus Peters
James Eeles Maurice Baker
Flora Nicholson Jessie Sutton
Bronte Carmichael Young Girl on Tube
Roisin O'Neill Agnes Dillon
John Locke Oliver Wilson
Joanna Neary Margaret Jerome
Richard Glover Brigadier Nicholson
Tom Ashley Ramsay Staffer
Joshua Higgott Reporter
Imogen King Teenage Girl at Tube Map
Miles Gallant Naval Map-Room Officer
Faye Marsay Sybil
John Atterbury Sir Alexander Cadogan
James Harkness AD Nicholl (Secretary #1)
Joshua James W D Wilkinson (Secretary #2)
Charley Palmer Rothwell Christopher Wilson (Photographer)
Patsy Ferran Maid
Sarah Flind Cook
Steffan Donnelly Back Bencher
Kieran Buckeridge Cecil Beaton
Johnny Otto Member of Parliament (uncredited)
Nick Howden-Steenstra Sentry (uncredited)