| Name | Character | Episodes |
|---|---|---|
| Rosalind Eleazar | Violet Cross | 24 |
| Bronwyn James | Fanny Lambert | 24 |
| Danny Sapani | William North | 24 |
| Ben Lambert | Lord Fallon | 24 |
| Roy Beck | Mr. Abbadon | 24 |
| Samantha Morton | Margaret Wells | 16 |
| Jessica Brown Findlay | Charlotte Wells | 16 |
| Lesley Manville | Lydia Quigley | 16 |
| Kate Fleetwood | Nancy Birch | 16 |
| Dorothy Atkinson | Florence Scanwell | 16 |
| Eloise Smyth | Lucy Wells | 16 |
| Holli Dempsey | Emily Lacey | 16 |
| Liv Tyler | Lady Isabella Fitzwilliam | 8 |
| Alfie Allen | Isaac Pincher | 8 |
| Hugh Skinner | Sir George Howard | 8 |
| Rory Fleck-Byrne | Daniel Marney | 8 |
| Poppy Corby-Tuech | Marie-Louise D'Aubigne | 8 |
| Douggie McMeekin | Charles Quigley | 8 |
| Richard McCabe | Justice Cunliffe | 8 |
| Sebastian Armesto | Justice Hunt | 8 |
| Pippa Bennett-Warner | Harriet Lennox | 8 |
| Edward Hogg | Thomas Haxby | 8 |
| Tim McInnerny | Lord Repton | 3 |
| Fenella Woolgar | Lady Repton | 1 |