| Name | Character | Episodes |
|---|---|---|
| John Alderton | Mike Upchat | 7 |
| Terence Alexander | Sir James Rothwell | 1 |
| Wanda Ventham | Gwen | 1 |
| Denis Lill | Oliver | 1 |
| Michael Ripper | Hardcastle | 1 |
| Joyce Carey | Mrs. Cookson | 1 |
| Aimée Delamain | Miss Willoughby (as Aimee Delamain) | 1 |
| Bernadette Milnes | Polly | 1 |
| Joan Benham | Lady Rothwell | 1 |