Geoffrey Keen
The Prime Minister - Reginald Stevens
Gladys Henson
Mrs. Sarah Arscott - Constituent at Party Meeting
Jack Armstrong
Man Bench by the River Thames (uncredited)
John Arnatt
Gregson, BBC Reporter (uncredited)
Paul Beradi
MP Smoking on Terrace (uncredited)
John Blythe
Pub Customer (uncredited)
A.J. Brown
Speaker of the House (uncredited)
Marie Burke
Mary's Housekeeper (uncredited)
Jimmy Charters
Man at Earnley Station (uncredited)
Donald Churchill
Sheilah's Party Guest (uncredited)
Mark Dignam
Earnley Constituent (uncredited)
Philip Gilbert
Terry Langham (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)
William Mervyn
Postmaster-General (uncredited)
Philip Ray
M.P - House of Commons Entrance Area (uncredited)
Oliver Reed
Man with Bucket on His Head (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)
Jimmy Thompson
Sheilah's Party Guest (uncredited)
Mona Washbourne
Well-wisher at Train Station (uncredited)