Trailer
Cast
David Bamber
Admiral Ramsay
Eric MacLennan
Tom Leonard
Demetri Goritsas
Cabinet Secretary Bridges
Edmund Wiseman
Actor
Imogen King
Teenage Girl at Tube Map
Sarah Flind
Cook
Brian Pettifer
Lord Kingsley Wood
Flora Nicholson
Jessie Sutton
Kieran Buckeridge
Cecil Beaton
Adrian Rawlins
Air Chief Marshal Dowding
Bethany Muir
Sarah Churchill
Tom Ashley
Ramsay Staffer
Faye Marsay
Sybil
Kristin Scott Thomas
Clemmie
James Eeles
Maurice Baker
Stephen Dillane
Viscount Halifax
Richard Lumsden
General Ismay
Hilton McRae
Arthur Greenwood
Mary Antony
Mary Churchill
Michael Gould
Lord Londonderry
Paul Ridley
House of Commons Speaker
Pip Torrens
BBC Producer
Nia Gwynne
Alice Simpson
John Atterbury
Sir Alexander Cadogan
David Schofield
Clement Atlee
Hannah Steele
Abigail Walker
Richard Glover
Brigadier Nicholson
Joshua Higgott
Reporter
James Harkness
AD Nicholl (Secretary #1)
Anna Burnett
Pamela Churchill
Olivier Broche
Reynaud
David Strathairn
President Roosevelt (voice)
Philip Martin Brown
Sawyers
Joshua James
W D Wilkinson (Secretary #2)
Johnny Otto
Member of Parliament (uncredited)
Ronald Pickup
Neville Chamberlain
Nicholas Jones
Sir John Simon
Michael Bott
Equerry
Charley Palmer Rothwell
Christopher Wilson (Photographer)
Gary Oldman
Winston Churchill
Joe Armstrong
John Evans
Roisin O'Neill
Agnes Dillon
Lily James
Elizabeth Layton
Ben Mendelsohn
King George VI
Bronte Carmichael
Young Girl on Tube
Samuel West
Sir Anthony Eden
Malcolm Storry
General Ironside
Mario Hacquard
Daladier
John Locke
Oliver Wilson
Robin Pearce
Ernle Hastings
Benjamin Whitrow
Sir Samuel Hoare
Paul Leonard
Admiral Dudley Pound
Jordan Waller
Randolph Churchill
Jeremy Child
Lord Stanhope
Patsy Ferran
Maid
Steffan Donnelly
Back Bencher