Main[]
- Imelda Staunton as Queen Elizabeth II
- Jonathan Pryce as Prince Philip
- Lesley Manville as Princess Margaret, Countess of Snowdon
- Dominic West as Charles, Prince of Wales
- Olivia Williams as Camilla Parker Bowles
- Ed McVey as Prince William of Wales
- Meg Bellamy as Catherine Middleton
- Luther Ford as Prince Harry of Wales
- Claudia Harrison as Princess Anne
- Marcia Warren as Queen Elizabeth, The Queen Mother
- Sebastian Blunt as Prince Edward
- Matilda Broadbridge as Pippa Middleton