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 Joshua Riley as Prince Adolphus Ryan Gage as Prince Regent Keir Charles as Lord Ledger Connie Jenkins-Greig as Young Violet Eliza Capel as Princess Sophia Florence Dobson as Princess Victoria Felix Brunger as Prince Frederick Helen Coathup as Young Princess Augusta Harvey Almond as Prince Ernest 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