| Name | Character | Episodes |
|---|---|---|
| Steve Pemberton | Georgie Pillson | 3 |
| Paul Ritter | Rev. Kenneth 'Padre' Bartlett | 3 |
| Mark Gatiss | Major Benjamin 'Benjy' Flint | 3 |
| Miranda Richardson | Elizabeth Mapp | 3 |
| Anna Chancellor | Emmeline 'Lucia' Lucas | 3 |
| Frances Barber | Amelia, Contessa di Faraglione | 3 |
| Gemma Whelan | Irene Coles | 3 |
| Pippa Haywood | Susan Wyse MBE | 3 |
| Felicity Montagu | Godiva 'Diva' Plaistow | 3 |
| Poppy Miller | Evie Bartlett | 3 |
| Soo Drouet | Grosvenor | 3 |
| Nicholas Woodeson | Algernon Wyse | 3 |
| Gavin Brocker | Cadman | 3 |