Guest Stars Richard Cunningham as Lord Bute Neil Edmond as Earl Harcourt Peyvand Sadeghian as Coral Tunji Kasim as Adolphus Guy Henry as Doctor Monro Seamus Dillane as Prince William Jack Michael Stacey as Prince Edward Ryan Gage as Prince Regent Keir Charles as Lord Ledger Connie Jenkins-Greig as Young Violet Florence Dobson as Princess Victoria Riyonn Farsad as Monro's Assistant Gerrard McArthur as Dr. Hunter Jasper Jacob as Henry Reed Sean Alayo as Bishop Alison Buchanan as Operatic Soprano Isaiah Ajiboye as Dominic Harry Omosele as Duke of Hastings Amy Rockson as Danbury Nanny Nicola Alexis as Lady Smythe-Smith Sophie Harkness as Princess Adelaide Lemar as Lord Smythe-Smith Daniel Cerqueira as Allan Ramsay