Simon Ward as Winston Churchill

Peter Cellier as Le capitaine du 35e Sikhs

Robert Shaw as Lord Randolph Churchill

Anne Bancroft as Lady Jennie Churchill

Jack Hawkins as Mr. Welldon

Ian Holm as George E. Buckle

Anthony Hopkins as David Llyod George

Edward Woodward as Captain Aylmer Haldane

John Mills as General Kitchner

Patrick Magee as General Bindon Blood

James Cosmo as Officer on Train

Jane Seymour as Pamela Plowden

Robert Hardy as Prep School Headmaster

Laurence Naismith as Lord Salisbury

Reginald Marsh as Prince of Wales

Dinsdale Landen as Capt. Weaver

John Woodvine as Howard

Clive Morton as Dr. Roose

Robert Flemyng as Dr. Buzzard

Richard Leech as Moore

Colin Blakely as Butcher

Andrew Faulds as Mounted Boer

Edward Burnham as Henry Labouchere

Russell Lewis as Winston (age 7)

Norman Gay as Sir Charles W. Dilke (uncredited)

Ronald Hines as Adjutant

Dino Shafeek as Sikh Solider

Pat Haywood as Mrs. Everest

William Dexter as Arthur Balfour

Basil Dignam as Joseph Chamberlain

John Stuart as Speaker Peel

Noel Davis as Interviewer

Michael Audreson as Winston (aged 13)

Peter Mann as Harrow Speech Room Boy

Julian Holloway as Capt. Baker

Thorley Walters as Major Finn

Patrick Holt as Colonel Martin

Norman Bird as Party Chairman

Edward Woodward as Aylmer Haldane

Gerald Sim as Engineer

Ron Pember as Fireman

Maurice Roëves as Brockie

James Cossins as Barnsby

Norman Rossington as Dewsnap

Pippa Steel as Clementine Hozier

Robert Harris as Speaker Gully

Edward Burnham as Hanry Labouchere

Raymond Huntley as Old Officer

Jack Armstrong as Member of Parliament (uncredited)

Jack Arrow as Member of Parliament (uncredited)

Richard Beal as Boer Sentry (uncredited)

Alan Beaton as Member of Parliament (uncredited)

Hyma Beckley as Opposition MP (uncredited)

Ernest Blyth as Member of Parliament (uncredited)

Vic Chapman as Clerk of the Commons (uncredited)

Jimmy Charters as Member of Parliament (uncredited)

Jeremy Child as Austen Chamberlain (uncredited)

Alan Cope as Member of Parliament (uncredited)

Brenda Cowling as Mrs. Dewsnap (uncredited)

Arnold Diamond as Officer (uncredited)

Willoughby Gray as Gladstone (uncredited)

Victor Harrington as House of Commons Doorkeeper (uncredited)

Alan Harris as Member of Parliament (uncredited)

Nigel Hawthorne as Boer Sentry (uncredited)

Lindsay Hooper as Member of Parliament (uncredited)

Kevin Hudson as Jack Winston (uncredited)

Pat Judge as Member of Parliament (uncredited)

Juba Kennerley as Harrow school master (uncredited)

Robert Lankesheer as Sympathetic MP (uncredited)

Roy Lansford as Member of Parliament (uncredited)

Raymond Mason as Man in Theatre Gallery (uncredited)

George Mikell as Field Cornet (uncredited)

Hugh Morton as Lord Randolph Churchill's Butler (uncredited)

Fred Peck as Member of Parliament (uncredited)

Bob Raymond as Man on Stage (uncredited)

Tony Snell as Member of Parliament (uncredited)

Byron Sotiris as Member of Parliament (uncredited)

Guy Standeven as Harrow School Master (uncredited)

Fred Stroud as Member of Parliament (uncredited)

John Tatham as Member of Parliament (uncredited)

Harry Tierney as Member of Parliament (uncredited)

Sanders Watney as Sir Winston (uncredited)

John Wilder as Member of Parliament (uncredited)