| Hugh Bonneville | Robert Crawley, Earl of Grantham |
| Jessica Brown Findlay | Lady Sybil Crawley |
| Laura Carmichael | Lady Edith Crawley |
| Jim Carter | Charles Carson |
| Brendan Coyle | John Bates |
| Michelle Dockery | Lady Mary Crawley |
| Siobhan Finneran | Sarah O'Brien |
| Joanne Froggatt | Anna Smith |
| Thomas Howes | William Mason |
| Robert James-Collier | Thomas Barrow
(as Rob James-Collier) |
| Rose Leslie | Gwen Dawson |
| Phyllis Logan | Mrs. Hughes |
| Elizabeth McGovern | Cora Crawley, Countess of Grantham |
| Sophie McShera | Daisy Robinson |
| Lesley Nicol | Mrs. Patmore |
| Maggie Smith | Violet Crawley, Dowager Countess of Grantham |
| Dan Stevens | Matthew Crawley |
| Penelope Wilton | Isobel Crawley |
| Robert Bathurst | Sir Anthony Strallan |
| Colin R. Campbell | Man at Smithy |
| Kevin Doyle | Joseph Molesley |
| Bernard Gallagher | Bill Molesley |
| Dean Williamson | Farmer |