| Ano | Nota | Título | Personagem |
|---|---|---|---|
| 2024 | Darkness & Light: The Life of Graham Williams | Self - (archive) | |
| 2022 | National Theatre Live: The Corn Is Green | Writer | |
| 1991 | Rei Por Acaso | Novel | |
| 1986 | Past Caring | Edward | |
| 1982 | The Deadly Game | Bernard Laroque | |
| 1979 | O Milho Está Verde | Theatre Play | |
| 1979 | O Milho Está Verde | Writer | |
| 1970 | The Walking Stick | Jack Foil | |
| 1969 | David Copperfield | Mr. Dick | |
| 1969 | The Epic That Never Was | Interviewee / Caligula (archive footage) | |
| 1966 | O Olho do Diabo | Alain de Montfaucon | |
| 1964 | Night Must Fall | Theatre Play | |
| 1962 | The L-Shaped Room | Dr. Weaver | |
| 1959 | O Navio Condenado | Sir Wilfred Falcett | |
| 1959 | Beyond This Place | Enoch Oswald | |
| 1958 | I Accuse! | Emile Zola | |
| 1957 | A Sombra da Forca | Theatre Play | |
| 1955 | O Profundo Mar Azul | Sir William Collyer | |
| 1952 | Ivanhoé, o Vingador do Rei | Wamba | |
| 1952 | A Caixa Mágica | Bank Manager | |
| 1951 | Mulher Maldita | Dr. Henderson | |
| 1951 | The Scarf | Dr. David Dunbar | |
| 1950 | Three Husbands | Maxwell Bard | |
| 1949 | The Last Days of Dolwyn | Rob | |
| 1949 | The Last Days of Dolwyn | Director | |
| 1949 | The Last Days of Dolwyn | Screenplay | |
| 1945 | O Coração Não Envelhece | Theatre Play | |
| 1942 | Life Begins at Eight-Thirty | Writer | |
| 1942 | Hatter's Castle | Dennis | |
| 1941 | This England | Appleyard | |
| 1941 | This England | Dialogue | |
| 1941 | Major Barbara | Snobby Prince | |
| 1941 | You Will Remember | Bob Slater | |
| 1940 | Girl in the News | Tracy | |
| 1940 | Sob a Luz das Estrelas | Joe Gowlan | |
| 1939 | A Estalagem Maldita | Harry | |
| 1938 | They Drive by Night | Shorty Matthews | |
| 1938 | A Cidadela | Owen | |
| 1938 | A Cidadela | Additional Dialogue | |
| 1938 | Night Alone | Charles Seaton | |
| 1938 | Dead Men Tell No Tales | Dr. Headlam | |
| 1937 | Night Must Fall | Theatre Play | |
| 1936 | Lírio Partido | Chen Huan | |
| 1936 | Lírio Partido | Writer | |
| 1935 | The Divine Spark | Adaptation | |
| 1935 | City of Beautiful Nonsense | Jack Grey | |
| 1935 | The Dictator | King Christian VII of Danmark | |
| 1934 | O Homem que Sabia Demais | Additional Dialogue | |
| 1934 | The Iron Duke | Bates | |
| 1934 | Road House | Chester | |
| 1934 | Evensong | George Leary | |
| 1934 | My Song for You | Theodore Bruckner | |
| 1934 | Evergreen | Adaptation | |
| 1933 | Friday the Thirteenth | William Blake | |
| 1933 | Friday the Thirteenth | Dialogue | |
| 1932 | Sally Bishop | Arthur Montague | |
| 1932 | Men of Tomorrow | Horners | |
| 1932 | The Frightened Lady | Lord Lebanon |