
Roy Walsh, a brash and ambitious thug, leads a gang, bullying his friends into obedience. They roam the streets, assaulting and robbing anyone they encounter, but their reckless aggression soon spirals into larger, more dangerous crimes, thrusting them into escalating peril as the stakes grow and the danger compounds.
Does Cosh Boy have end credit scenes?
No!
Cosh Boy does not have end credit scenes. You can leave when the credits roll.
Explore the complete cast of Cosh Boy, including both lead and supporting actors. Learn who plays each character, discover their past roles and achievements, and find out what makes this ensemble cast stand out in the world of film and television.

Peter Swanwick
Mr. Wimbush (uncredited)

Hermione Baddeley
Mrs. Collins

Sean Lynch
Darkey

Joan Collins
Rene Collins

Laurence Naismith
Inspector Donaldson

Hermione Gingold
Queenie

Anthony Oliver
Doctor (uncredited)

Toke Townley
Mr. 'Smith' (uncredited)

Vi Kaley
Jess (uncredited)

Nosher Powell
Instructor (uncredited)

Nancy Roberts
Gran Walsh

Ian Whittaker
Alfie Collins

Arthur Howard
Registrar (uncredited)

Edward Evans
Woods

Walter Hudd
Magistrate (uncredited)

Sid James
Desk Sergeant

Stanley Escane
Pete

Johnny Briggs
Skinny Johnson

Betty Ann Davies
Elsie Walsh

Frederick Piper
Mr. Easter (uncredited)

Cameron Hall
Mr. Beverley

Michael McKeag
Brian

James Kenney
Roy Walsh

Robert Ayres
Bob Stevens
Discover where to watch Cosh Boy online, including streaming platforms, rental options, and official sources. Compare reviews, ratings, and in-depth movie information across sites like IMDb, TMDb, Wikipedia or Letterboxd.
Challenge your knowledge of Cosh Boy with this fun and interactive movie quiz. Test yourself on key plot points, iconic characters, hidden details, and memorable moments to see how well you really know the film.
What is the age of the gang leader Roy Walsh at the beginning of the film?
14
16
18
20
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Read the complete plot summary of Cosh Boy, including all major events, twists, and the full ending explained in detail. Explore key characters, themes, hidden meanings, and everything you need to understand the story from beginning to end.
Led by 16-year-old Roy Walsh, James Kenney leads a post-war London street gang that specializes in snatching women’s purses, using their membership in a boys’ club as cover. During a club-sponsored dance, Roy meets Rene Collins, Joan Collins, the sister of a gang member, and the pair’s uneasy connection begins to shape the course of events. Over time, Rene submits to his sexual advances, an arrangement that leads to a startling consequence.
Later, upon visiting a doctor, Rene learns she’s pregnant. She tells Roy, who wants nothing more to do with her, and Rene’s crisis deepens as she attempts suicide. Meantime, Roy’s mother, Elsie Walsh, Betty Ann Davies is seeing Bob Stevens, Robert Ayres, who pressurefully urges a quick marriage so he can claim authority over Roy. He promises to “take Roy in hand,” a notion that fuels Roy’s growing hatred for Bob.
Bob is the assistant manager at the Palindrome dance hall, a detail that situates the gang’s activities in a familiar urban space. One evening, Roy’s gang robs the Palindrome’s box-office take, and during the heist Roy shoots a staff member, leaving him seriously wounded. Later that night in a hospital, Rene’s mother witnesses her daughter’s recovery from her suicide attempt and rushes to Elsie’s flat with a mob of concerned women, shouting for Roy to be brought forward. Bob arrives, urging Rene’s mother to go home, and then he kicks in the door to Roy’s bedroom, where the boy has taken refuge.
Bob decides to give Roy a hard lesson, and the scene builds toward its tense apex as the belt he wields becomes a focal point. The police arrive just as Bob is ready to administer punishment, and he claims to be Roy’s stepfather, having just married Elsie that very morning. The senior officer offers a quiet, ceremonial nod, even as he and his partner consider arresting another gang member and returning for Roy later. Bob begins to thrash Roy as a crowd of women outside cries out in Roy’s name, while the detectives walk away into the night, leaving the outcome unresolved and the violence momentarily suspended.
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