| Name | Character | Episodes |
|---|---|---|
| John Rhys-Davies | Peter Newell | 1 |
| Elizabeth Counsell | Mrs. GIbson | 1 |
| Thorley Walters | Sir Ramsey | 1 |
| T. P. McKenna | Dick Pummery | 1 |
| Martin Shaw | Dave | 1 |
| Jane Wymark | Jo Gilkes | 1 |
| Clive Swift | 'Bunny' Nettleton | 1 |
| Michael Sheard | Sergeant | 1 |
| Wolfe Morris | Hubbard | 1 |
| Simon MacCorkindale | Peter Gilkes | 1 |
| Glyn Houston | Sidney Stewart | 1 |
| Michael Kitchen | Bob Curry | 1 |
| Norman Mitchell | Police Sergeant | 1 |
| Pauline Quirke | Noreen Beale | 1 |
| Mark Dignam | Arthur Grace | 1 |
| Lynda La Plante | Young Woman | 1 |
| Patricia Haines | Sheila Boyd | 1 |
| Simon Oates | Peter Wager | 1 |
| Madge Ryan | Florence Raymount | 1 |
| Norman Jones | Stan Biddick | 1 |
| Peter Halliday | Crisp | 1 |
| Gerald James | Joe Nash | 1 |
| Elizabeth Sellars | Angie Truscott | 1 |
| Anthony Bate | Roger Truscott | 1 |
| Geoffrey Bateman | Colin Grimley | 1 |
| Bill Dean | Duggie Jebb | 1 |
| Bernard Horsfall | Clyde Boyd | 1 |
| Richard Bebb | Commercial Voice | 1 |
| Wensley Pithey | Mr. Liversedge | 1 |
| Stuart McGugan | Jimmy Beattie | 1 |
| Ruth Goring | June King | 1 |
| Madoline Thomas | Mrs. Ogden | 1 |
| Denis Holmes | Ashwell | 1 |