Rochdale born John Barrett was a veteran of over 100 films and various TV programmes in a career that stretched twenty five years from 1958 to his death in 1983.
| Movie | Mystic Minnie | Gary Carthy | 2022-08-02 |
| Movie | The Club | Paramedic Extra | 2022-11-05 |
| Movie | Bitcoin: The End of Money as We Know It | Voice | 2015-07-18 |
| Movie | The Glass Man | Office Employee | 2011-08-26 |
| Movie | Wimbledon | Court Commentator John Barrett | 2004-09-13 |
| Movie | Double Blast | Trainer | 1994-05-18 |
| Movie | To the Death | Rick Quinn | 1992-07-23 |
| Movie | American Kickboxer | BJ Quinn | 1991-07-24 |
| Movie | Options | Bob | 1989-05-27 |
| Movie | Merchants of War | Tom Harris | 1989-01-01 |
| Movie | Headhunter | Detective #2 | 1989-10-01 |
| Movie | Final Cut | Private Investigator | 1989-10-31 |
| Movie | Death Force | Assassin | 1989-11-30 |
| Movie | Takeover | Saxophone Player | 1988-02-10 |
| Movie | It's Murphy's Fault | Trevor | 1988-06-01 |
| Movie | As Time Goes By | Sandhill Bob | 1988-09-29 |
| Movie | Rikky and Pete | Barracks Man | 1988-06-09 |
| Movie | Hunk | Lifeguard | 1987-03-06 |
| Movie | Gymkata | Gomez | 1985-05-03 |
| Movie | Remembrance | Jimmy | 1982-10-01 |
| Movie | Silent Rage | Institute Doctor | 1982-04-02 |
| Movie | The Missionary | Old Man Outside Hotel | 1982-11-02 |
| Movie | Rolling Home | Mr. Wyman | 1982-12-03 |
| Movie | The French Lieutenant's Woman | Dairyman | 1981-08-28 |
| Movie | Murder Rap | Tiger | 1980-01-31 |
| Movie | The Octagon | Justine's Killer | 1980-08-14 |
| Movie | Porridge | Hedley | 1979-08-12 |
| Movie | Tess | Old Dairy Hand | 1979-10-06 |
| Movie | Comedians | Caretaker | 1979-10-25 |
| Movie | Robin and Marian | Jack | 1976-03-11 |
| Movie | Packman's Barn | Ben Packman | 1976-01-27 |
| Series | Bill Brand | Albert Stead | 1976-06-07 |
| Movie | It Shouldn't Happen to a Vet | Crump | 1976-11-18 |
| Movie | The Eagle Has Landed | Laker Armsby | 1976-12-24 |
| Movie | Lloyd George Knew My Father | Robertson | 1975-08-19 |
| Movie | Smokey Joe's Revenge | Bill Bassett | 1974-01-01 |
| Movie | South Riding | 1974-09-16 | |
| Series | Not On Your Nellie | 1974-03-03 | |
| Series | Last of the Summer Wine | Guide | 1973-01-04 |
| Series | The Jensen Code | Mr. Buckle | 1973-02-28 |
| Movie | Malachi's Cove | Polwarth | 1973-10-01 |
| Movie | O Lucky Man! | Bill | 1973-03-25 |
| Movie | The Death of Glory | Charles | 1973-09-11 |
| Movie | Nearest and Dearest | Joshua Pledge | 1972-01-01 |
| Movie | Up the Chastity Belt | 1st Peasant | 1972-01-14 |
| Movie | Billy's Last Stand | Billy | 1971-02-04 |
| Movie | The Hunting of Lionel Crane | Christmas Potter | 1970-01-21 |
| Movie | The Long Distance Piano Player | Old Man | 1970-10-15 |
| Series | The Dustbinmen | 1969-09-23 | |
| Movie | Star! | Speaker at Hyde Park (uncredited) | 1968-07-18 |
| Movie | There's a Hole in Your Dustbin, Delilah | Smellie Ibbotson | 1968-09-30 |
| Movie | Far from the Madding Crowd | Joseph Poorgrass | 1967-06-18 |
| Movie | The Witches | Mr. Glass | 1966-11-21 |
| Movie | The Trygon Factor | Guide | 1966-12-16 |
| Movie | War-Gods of the Deep | Third Fisherman | 1965-05-26 |
| Movie | The World of George Orwell: 1984 | Waiter | 1965-11-28 |
| Movie | The Crunch | Prison Orderly | 1964-01-19 |
| Series | The Villains | Fletcher | 1964-02-28 |
| Movie | A Prize of Arms | Publican | 1962-12-11 |
| Movie | Anna Karenina | Cord | 1961-11-03 |
| Movie | Saturday Night and Sunday Morning | Man in Cafe (uncredited) | 1960-10-27 |
| Movie | Who Pays the Piper? | 1960-10-13 | |
| Movie | Jack the Ripper | Onlooker at 2nd Murder Scene | 1959-05-28 |
| Series | Probation Officer | Clerk of Court | 1959-09-14 |