Guest Stars Joanna Bobin as Lady Cowper Kathryn Drysdale as Genevieve Delacroix Jessica Madsen as Cressida Cowper Hugh Sachs as Brimsley Geraldine Alexander as Mrs. Wilson Molly McGlynn as Maid Rose Simon Ludders as Humboldt Ray MacAllan as Hastings Driver Jamie Beamish as Nigel Berbrooke Oscar Coleman as 4-Year Old Simon Caroline Quentin as Lady Berbrooke Jordan Alexandra as Courtesan 1 Richard Pepple as Duke of Hastings Daphne Di Cinto as Duchess of Hastings Hamish MacDougall as Hastings Footman Lucas Booth-Clibborn as 11-Year Old Simon Georgia Burnell as Celia Lynette Clarke as Simon's Nurse Paul Herzberg as Man 1 Letty Thomas as Laundry Maid Cairo Eusebe as 6-Year Old Simon Celine Abrahams as Midwife Amerjit Deu as Doctor Joseph Akubeze as Royal Footman