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