| Name | Character | Episodes |
|---|---|---|
| Jonathan Hyde | Edward Marshall Hall | 8 |
| Julian Firth | Wellesley Orr | 8 |
| Terence Taplin | Arthur Newton | 8 |
| Trevor Ray | Harry Bishop | 8 |
| Michael Feast | Edgar Bowker | 8 |
| Leslee Udwin | Henriette Marshall Hall | 8 |
| David Bradley | Edward Lawrence | 1 |
| Tim McInnerny | Lieutenant de Ponthieu | 1 |
| John Bird | Mr. Justice Hawkins | 1 |
| David Schofield | Alfred Harmsworth | 1 |
| Pauline Moran | Ruby Ray | 1 |
| Siân Phillips | Lady Scott | 1 |
| Peter Capaldi | Robert Wood | 1 |
| David Graham | Mr. Justice Grantham | 1 |
| David Rintoul | Captain James Fairbrother | 1 |
| Leon Lissek | Count Festetics | 1 |
| Caroline Quentin | Mary Bennett | 1 |
| Patrick Godfrey | Lawson Walton, K.C. | 1 |
| Vincent Riotta | Herbert Bennett | 1 |
| Nicola Duffett | Ruth Hadley | 1 |
| Roger Ashton-Griffiths | William Thompson | 1 |
| Emma Davies | Louise Hutchins | 1 |
| Sian Thomas | Hettie Chattell | 1 |
| Gawn Grainger | Charles Gill | 1 |
| Derek Newark | Van der Hogh | 1 |
| Morris Perry | Lord Alverstone | 1 |
| Christopher Burgess | Inspector Upfold | 1 |