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