| Christopher Timothy | as | James Herriot | |
| Robert Hardy | as | Siegfried Farnon | |
| Peter Davison | as | Tristan Farnon | |
| Carol Drinkwater | as | Helen Herriot (Series 1-3) | |
| Lynda Bellingham | as | Helen Herriot (Series 4-7) | |
| John McGlyn | as | Calum Buchanan | |
| Mary Hignett | as | Mrs Hall |
Series: 7
Episodes: 90
Transmitted: 1978-1990
BBC Television