Churchill's Secret: Reparto

Michael Gambon
Winston Churchill

Lindsay Duncan
Clemmie Churchill

Romola Garai
Millie Appleyard

Matthew Macfadyen
Randolph Churchill

Tara Fitzgerald
Diana Churchill

Rachael Stirling
Sarah Churchill

Bill Paterson
Lord Moran

Daisy Lewis
Mary Churchill

Alex Jennings
Anthony Eden

Chris Larkin
Rab Butler

James Wilby
Brendan Bracken

Patrick Kennedy
Jock Colville

Christian McKay
Christopher Soames

John Standing
Lord Camrose
Matilda Sturridge
Rosie Hopper

Matthew Marsh
Lord Beaverbrook

Ian Mercer
Sgt Murray
William Blenkinsop
Young Randolph

Eloise Webb
Young Diana

Dixie Egerickx
Young Sarah Churchill
Harper Gray
Young Nicholas Soames
Molly Ashby
Young Emma
Margot Orr
Marigold

Jon Wennington
Delegate (uncredited)