| Name | Character | Episodes |
|---|---|---|
| David Rintoul | Dr. John Finlay | 27 |
| Ian Bannen | Dr. Alexander Cameron | 27 |
| Jessica Turner | Dr. Jennifer Napier | 27 |
| Annette Crosbie | Janet MacPherson | 9 |
| Jean Anderson | Mrs. Stirling | 2 |
| Georgie Glen | Rosemary Bain | 1 |
| David McKail | Mr. Muir | 1 |
| James Murray | Gordon | 1 |
| Ralph Riach | Dr. Gilmore | 1 |
| Gordon Reid | Angus Livingstone | 1 |
| Elspet Gray | Mrs. Finlay | 1 |