Fionn Whitehead as Tommy

Tom Hardy as Farrier

Mark Rylance as Mr. Dawson

Kenneth Branagh as Commander Bolton

Cillian Murphy as Shivering Soldier

Barry Keoghan as George

Harry Styles as Alex

Aneurin Barnard as Gibson

Damien Bonnard as French Soldier

Lee Armstrong as Grenadier

James Bloor as Irate Soldier

Tom Glynn-Carney as Peter

Jack Lowden as Collins

Luke Thompson as Warrant Officer

Michel Biel as French Soldier 2

Constantin Balsan as French Soldier 3

Billy Howle as Petty Officer

Mikey Collins as Soldier

Callum Blake as Stretcher Bearer

Dean Ridge as Soldier at the Gap

Bobby Lockwood as Able Seaman

Will Attenborough as Second Lieutenant

Tom Nolan as Lieutenant

James D'Arcy as Colonel Winnant

Matthew Marsh as Rear Admiral

Adam Long as Sub-Lieutenant

Miranda Nolan as Nurse

Bradley Hall as Sailor

Jack Cutmore-Scott as Lifeboat Soldier 1

Brett Lorenzini as Lifeboat Soldier 2

Michael Fox as Engineer

Brian Vernel as Highlander 1

Elliott Tittensor as Highlander 2

Kevin Guthrie as Highlander 3

Harry Richardson as Private

Jochum ten Haaf as Dutch Seaman

Johnny Gibbon as Junior Naval Officer

Richard Sanderson as Heinkel Spotter

Kim Hartman as Stewardess

Calam Lynch as Deal Sailor

Charley Palmer Rothwell as Corporal

Tom Gill as Furious Soldier

John Nolan as Blind Man

Bill Milner as Lone Private

Jack Riddiford as Soldier on RN Launch

Harry Collett as Boy

Eric Richard as Man at Railway Window

Michael Caine as Voice on Radio (uncredited)

Johnny Otto as Captain Marshall (uncredited)

Nick Howden-Steenstra as British Soldier (uncredited)