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