Alec Guinness

as Sidney Stratton

Joan Greenwood

as Daphne Birnley

Cecil Parker

as Alan Birnley

Michael Gough

as Michael Corland

Ernest Thesiger

as Sir John Kierlaw

Vida Hope

as Bertha

Howard Marion-Crawford

as Cranford

Miles Malleson

as The Tailor

Henry Mollison

as Hoskins

Patric Doonan

as Frank

Duncan Lamont

as Harry

Harold Goodwin

as Wilkins

Colin Gordon

as Hill

Joan Harben

as Miss Johnson

Arthur Howard

as Roberts

Roddy Hughes

as Green

Stuart Latham

as Harrison

Edie Martin

as Mrs. Watson

Mandy Miller

as Gladdie

Charlotte Mitchell

as Mill Girl

Olaf Olsen

as Knudsen

Desmond Roberts

as Mannering

Ewan Roberts

as Fotheringay

John Rudling

as Wilson

Charles Saynor

as Pete

Russell Waters

as Davidson

Brian Worth

as King

George Benson

as The Lodger

Frank Atkinson

as The Baker

Charles Cullum

as 1st Company Director

F.B.J. Sharp

as 2nd Company Director

Scott Harrold

as Express Reporter

Jack Howarth

as Receptionist at Corland Mill

Jack McNaughton

as Taxi Driver

Judith Furse

as Nurse Gamage

Billy Russell

as Nightwatchman

Andy Alston

as Mill Worker (uncredited)

Jack Arrow

as Mill Worker (uncredited)

David Boyd

as Office Boy (uncredited)

Jim Brady

as Mill Worker (uncredited)

Harold Coyne

as Mill Worker (uncredited)

Dan Cressey

as Lab Technician (uncredited)

Alan Haines

as Reporter (uncredited)

Laurence Hepworth

as Chauffeur (uncredited)

Frank Howard

as Mill Worker (uncredited)

Gertrude Kaye

as Mill Worker (uncredited)

Jimmy Millar

as Mill Worker (uncredited)

Arthur Mullard

as (uncredited)

Joe Phelps

as Mill Worker (uncredited)

Johnny Rossi

as Baker (uncredited)

Carol Wolveridge

as Schoolgirl in Front of Class (uncredited)