| Name | Character | Episodes |
|---|---|---|
| Michael Fassbender | Thomas Rainsborough | 4 |
| Tim McInnerny | Joliffe | 4 |
| Andrea Riseborough | Angelica Fanshawe | 4 |
| Dominic West | Oliver Cromwell | 4 |
| Harry Lloyd | Prince Rupert of the Rhine | 4 |
| Clive Russell | Presbyterian Preacher | 4 |
| John Simm | Edward Sexby | 4 |
| Peter Capaldi | King Charles I | 4 |
| Al Weaver | Christian | 4 |
| Daniel Ryan | Chimney | 4 |
| Adrian Schiller | Thurlow | 4 |
| Maxine Peake | Elizabeth Lilburne | 4 |
| Paul Jesson | Bradshaw | 4 |
| Ben Aldridge | Harry Fanshawe | 4 |
| Rob van Vuuren | The Devil | 4 |
| Tom Goodman-Hill | John Lilburne | 4 |