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| Año | Título | Personaje | Valoración |
|---|---|---|---|
| 1984 | Threads | Accommodation Officer | ★★★★☆ |
| 1983 | Doctor Who: Snakedance | Megaphone Man | ★★☆☆☆ |
| 1981 | Bergerac | Port Officer | ★★★☆☆ |
| 1979 | Minder | Van Radio Officer | ★★★☆☆ |
| 1978 | Enemy at the Door | Louis Brossard | ★★★★☆ |
| 1977 | Doctor Who: The Invisible Enemy | Safran | ★★★★☆ |
| 1975 | Doctor Who: Revenge of the Cybermen | Seprah | ★★★☆☆ |
| 1975 | The Good Life | Harry Bennett | ★★★★☆ |
| 1973 | The Love-Girl and the Innocent | Machineshop Foreman | ★★★☆☆ |
| 1973 | La ofensa | Policeman | ★★★☆☆ |
| 1973 | Last of the Summer Wine | Ted | ★★★★☆ |
| 1973 | Whatever Happened to the Likely Lads? | Colin | ★★★★☆ |
| 1972 | Miedo en la noche | 2nd Policeman | ★★★☆☆ |
| 1969 | On the Buses | ★★★★☆ | |
| 1968 | Submarino X-1 | CPO Barquist X 3 | ★★★☆☆ |
| 1968 | Only When I Larf | Spider | ★★★☆☆ |
| 1963 | Doctor Who | Sheprah | ★★★★☆ |
| 1963 | Doctor Who | Safran | ★★★★☆ |
| 1962 | Z-Cars | DC Bowker | ★★★★☆ |
Películas destacadas de Brian Grellis
Estas son las películas más destacadas en las que ha trabajdo:
