Season Two
| Tom Hardy ... James Keziah Delaney |
| Leo Bill ... Benjamin Wilton |
| Jessie Buckley ... Lorna Bow |
| Oona Chaplin ... Zilpha Geary |
| Richard Dixon ... John Pettifer |
| Mark Gatiss ... The Prince Regent |
| Stephen Graham ... Atticus |
| Edward Fox ... Horace Delaney |
| Jefferson Hall ... Lieutenant Thorne Geary |
| David Hayman ... Brace |
| Edward Hogg ... Michael "Godders" Godfrey |
| Michael Kelly ... Dr. Edgar Dumbarton |
| Franka Potente ... Helga von Hinten |
| Jonathan Pryce ... Sir Stuart Strange |
| Jason Watkins ... Solomon Coop |
| Nicholas Woodeson ... Robert Thoyt |
| Marina Hands ... Countess Musgrove |
| Tom Hollander ... Dr. George Cholmondeley |
