| Name | Character | Episodes |
|---|---|---|
| Dennis Price | 20 | |
| Tracy Reed | 20 | |
| Eleanor Summerfield | 20 | |
| Fabia Drake | 20 | |
| Ian Carmichael | 20 | |
| Derek Nimmo | 20 | |
| Kynaston Reeves | Mr Waterbury | 1 |
| Rex Garner | Policeman | 1 |
| Max Adrian | Uncle George | 1 |
| Walter Horsbrugh | Purvis | 1 |
| Ronnie Stevens | Luicius Pim | 1 |
| Colin Gordon | The Rt. Hon. AB Filmer | 1 |
| John Scott Martin | 1 |