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