The Agitator
Directed by	John Harlow
Written by	Edward Dryhurst
Based on	Peter Pettinger by William Riley
Produced by	Louis H. Jackson
Starring	William Hartnell Mary Morris John Laurie
Cinematography	James Wilson
Edited by	Douglas Myers
Music by	John Greenwood
Production company	British National Films
Distributed by	Anglo-American Film Corporation
Release date	3 September 1945 (1945-09-03)
Running time	104 minutes
Country	United Kingdom
Language	English

The Agitator is a 1945 British drama film directed by John Harlow and starring William Hartnell, Mary Morris and John Laurie.^[1] Its plot follows a young mechanic who unexpectedly inherits the large firm where he works and tries to run it according to his socialist political beliefs. It was based on the 1925 novel Peter Pettinger by William Riley. It was made by British National Films at the company's Elstree Studios, with sets designed by the art director Wilfred Arnold.

Cast

• William Hartnell as Peter Pettinger
• Mary Morris as Lettie Shackleton
• John Laurie as Tom Tetley
• Moore Marriott as Ben Duckett
• J.H. Roberts as Mr. Ambler
• George Carney as Bill Shackleton
• Frederick Leister as Mark Overend
• Joss Ambler as Charles Sheridan, Manager of Overend Works
• Elliott Mason as Mrs. Pettinger
• Cathleen Nesbitt as Mrs. Montrose
• Joyce Heron as Helen Montrose
• Edward Rigby as Charlie Branfield
• Philip Godfrey as Bert Roberts
• Moira Lister as Joan Shackleton
• Beatrice Varley as Mrs. Shackleton
• Cyril Smith as Dunham
• Howard Douglas as Taylor
• Lloyd Pearson as Derek Cunlyffe
• Edgar Driver as Smith
• Bransby Williams as Salvation Army Leader