| Year | Title | Role | Notes |
| 1938 | The Duchess Of Malfi | Ferdinand of Aragon | Single drama |
| The Last Voyage of Captain Grant | Captain Grant | Single drama |
| Mary Rose | Cameron | Single drama |
| 1939 | Bees on the Boat-Deck | Gaster | Single drama |
| 1952 | The Three Hostages | Insp. MacGillivray | Four episodes |
| 1961–1963 | Tales of Mystery | Host / Algernon Blackwood | 29 episodes |
| 1962–1969 | The Avengers | | mw- hlist.inline,.mw-parser-output inline dl,.mw-parser-output inline ol,.mw-parser-output inline ul,.mw-parser-output dl dl,.mw-parser-output dl ol,.mw-parser-output dl ul,.mw-parser-output ol dl,.mw-parser-output ol ol,.mw- .mw- hlist dd:last-child ,.mw- hlist dd dd:first-child ,.mw-parser-output dd dt:first-child ,.mw-parser-output dd li:first-child ,.mw-parser-output dt dd:first-child ,.mw-parser-output dt dt:first-child ,.mw-parser-output dt li:first-child ,.mw-parser-output li dd:first-child ,.mw- hlist dd dd:last-child ,.mw-parser-output dd dt:last-child ,.mw-parser-output dd li:last-child ,.mw-parser-output dt dd:last-child ,.mw-parser-output dt dt:last-child ,.mw-parser-output dt li:last-child ,.mw-parser-output li dd:last-child ,.mw- .mw- hlist dd ol>li:first-child ,.mw- Death of a Great DaneBrief for MurderA Funny Thing Happened on the Way to the StationPandora |
| 1963 | Steptoe and Son | The Vet | Episode "Wallah, Wallah Catsmeat" |
| 1965 | Z Cars | Dr Ferguson | Episode "Partners" |
| Emergency-Ward 10 | Professor Corliss | Six episodes |
| 1968–1977 | Dad's Army | Private Frazer | 80 episodes, regular role |
| 1969 | The Gnomes of Dulwich | Top Gnome | 1 episode |
| 1970 | From a Bird's Eye View | Lord McBracken | One episode alongside Dads Army co-star Clive Dunn |
| 1971 | Jackanory | Storyteller | Five episodes reading The Princess and the Goblin |
| 1973 | Jackanory | Storyteller | Five episodes reading The Princess and Curdie |
| 1975 | Jackanory | Storyteller | Five episodes reading stories 'The Light Princess' and 'The Golden Key' |
| 1979 | Larry Grayson's Generation Game | Himself | Guest Appearance |
