Peter Finch

Johnnie Byrne

Stanley Holloway

Fred Andrews

Mary Peach

Pauline West

Donald Pleasence

Renfrew

Billie Whitelaw

Mary

Hugh Burden

Tim Maxwell

Rosalie Crutchley

Alice Byrne

Michael Goodliffe

Dr. West

Mervyn Johns

Charlie Young

Geoffrey Keen

The Prime Minister - Reginald Stevens

Paul Rogers

Sydney Johnson

Dennis Price

Flagg

Peter Barkworth

Henderson

Fenella Fielding

Sheilah

Derek Francis

Frank

Gladys Henson

Mrs. Sarah Arscott - Constituent at Party Meeting

Conrad Phillips

Drake

Maureen Pryor

Labour Party Member

George Rose

Edward Collins

Peter Sallis

M.P.

Jack Armstrong

Man Bench by the River Thames (uncredited)

John Arnatt

Gregson, BBC Reporter (uncredited)

Hyma Beckley

MP (uncredited)

Paul Beradi

MP Smoking on Terrace (uncredited)

Ernest Blyth

MP (uncredited)

John Blythe

Pub Customer (uncredited)

A.J. Brown

Speaker of the House (uncredited)

Avis Bunnage

Constituent (uncredited)

Marie Burke

Mary's Housekeeper (uncredited)

Jimmy Charters

Man at Earnley Station (uncredited)

Donald Churchill

Sheilah's Party Guest (uncredited)

Ernest Clark

M.P. (uncredited)

Marian Collins

Pretty Girl (uncredited)

George Curtis

Bobby (uncredited)

Dan Darnelli

MP (uncredited)

Mark Dignam

Earnley Constituent (uncredited)

Rex Garner

MP (uncredited)

Philip Gilbert

Terry Langham (uncredited)

Fred Griffiths

Taxi Driver (uncredited)

Jack Gwillim

MP (uncredited)

Victor Harrington

MP (uncredited)

Lindsay Hooper

MP (uncredited)

Walter Horsbrugh

House of Commons Archivist (uncredited)

Howard Lang

Labour Party Member greeting Johnnie Byrne (uncredited)

Aileen Lewis

Woman on Euston Station Platform (uncredited)

Jack Mandeville

Dancer in Nightclub (uncredited)

Colin McKenzie

Bobby (uncredited)

William Mervyn

Postmaster-General (uncredited)

Philip Ray

M.P - House of Commons Entrance Area (uncredited)

Oliver Reed

Man with Bucket on His Head (uncredited)

Jessie Robins

MP (uncredited)

Norman Rossington

Sykes of the Herald (uncredited)

Robert Sansom

Dying Minister (uncredited)

Ivan Santon

Man nudges Peter Finch (uncredited)

John Sharp

Railway Station Master (uncredited)

Emile Stemmler

MP (uncredited)

Jimmy Thompson

Sheilah's Party Guest (uncredited)

Joseph Tregonino

Waiter (uncredited)

Yolande Turner

Party Guest (uncredited)

Mona Washbourne

Well-wisher at Train Station (uncredited)

Johnny Wyne

MP (uncredited)