Guest Stars Neil Edmond as Earl Harcourt Richard Cunningham as Lord Bute Peyvand Sadeghian as Coral Guy Henry as Doctor Monro Tunji Kasim as Adolphus Seamus Dillane as Prince William Jack Michael Stacey as Prince Edward Ryan Gage as Prince Regent Keir Charles as Lord Ledger Joshua Riley as Prince Adolphus Connie Jenkins-Greig as Young Violet Eliza Capel as Princess Sophia Florence Dobson as Princess Victoria Harvey Almond as Prince Ernest Felix Brunger as Prince Frederick Helen Coathup as Young Princess Augusta Gerrard McArthur as Dr. Hunter Katie Brayben as Vivian Ledger Sabina Arthur as Princess Elizabeth Ben Cura as Prince Augustus James Fleet as King George Paul Cawley as Benjamin West Jonathan Partridge as Archbishop Sophie Lamont as Bridgerton Maid