Suggestions by @george84

Tom Hollander

as Edward VII (in flashbacks) in The Crown Prequel Season 2

Dean-Charles Chapman

as Young George V (in flashbacks) in The Crown Prequel Season 2

Anna Maxwell Martin

as Queen Mary in The Crown Prequel Season 2

Isobel Jesper Jones

as Mary, Princess Royal in The Crown Prequel Season 2

Raff Law

as Prince Henry, Duke of Gloucester in The Crown Prequel Season 2

Roman Griffin Davis

as Prince George, Duke of Kent in The Crown Prequel Season 2

Dexter Sol Ansell

as Prince John of the United Kingdom in The Crown Prequel Season 2

Fionn Whitehead

as Prince Albert (Duke of York from 1923) in The Crown Prequel Season 2

Gerran Howell

as Edward, Prince of Wales in The Crown Prequel Season 2

Jude Law

as King George V in The Crown Prequel Season 2

Jack Lowden

as George, Prince Of Wales in The Crown Prequel: Season 1

Tom Hollander

as King Edward VII in The Crown Prequel: Season 1

Alec Toselli

as Prince Carl of Norway in The Crown Prequel: Season 1

Gerran Howell

as George, Prince Of Wales in The Crown Prequel: Season 1

Justin Edwards

as PM Arthur Balfour in The Crown Prequel: Season 1

Richard Armitage

as PM H. H. Asquith in The Crown Prequel: Season 1

Gary Lewis

as PM Sir Henry Campbell-Bannerman in The Crown Prequel: Season 1

Tom Burke

as PM Arthur Balfour in The Crown Prequel: Season 1

Liam Cunningham

as PM Robert Gascoyne-Cecil in The Crown Prequel: Season 1

Isabella Brownson

as Princess Victoria in The Crown Prequel: Season 1