| Adam Knight is a young man who, having tried several jobs, decides to set up an agency, 'Knight Errant '59', to solve other people's problems - whatever they may be. There's plenty of scope and, assisted by former reporter Liz and idealistic young writer Peter, the latter-day Sir Lancelot is kept busy with a variety of curious and exciting cases. The series had two titles, Knight Errant '59 and Knight Errant Limited of which only two episodes exist out of the 75 produced. |
| Name | Character | Episodes |
|---|---|---|
| Kay Callard | Liz Parrish | 39 |
| Alan Webb | Colonel Cope-Addams | 38 |
| John Turner | Adam Knight | 37 |
| Richard Carpenter | Peter Parker | 37 |
| Elizabeth James | 1 |