| Name | Character | Episodes |
|---|---|---|
| Ioan Gruffudd | Phillip Bosinney | 10 |
| Damian Lewis | Soames Forsyte | 10 |
| Gina McKee | Irene Forsyte | 10 |
| John Carlisle | 10 | |
| Corin Redgrave | Old Jolyon Forsyte | 10 |
| Ben Miles | 10 | |
| Barbara Flynn | 10 | |
| Christian Coulson | 10 | |
| Rupert Graves | Young Jolyon Forsyte | 10 |
| Julian Ovenden | 10 | |
| Alistair Petrie | 10 | |
| Joanna David | 10 | |
| Ann Bell | 10 | |
| Wendy Craig | 10 | |
| Beatriz Batarda | 10 | |
| Amanda Root | 10 | |
| Amanda Ryan | 10 | |
| Gillian Kearney | 10 | |
| Alice Patten | 10 | |
| Judy Campbell Exner | 10 | |
| Robert Lang | 10 |