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