The Queen's Sister

Lucy Cohu

as Princess Margaret

Toby Stephens

as Tony Armstrong Jones - Lord Snowdon

Meredith MacNeill

as Sharman Douglas

Edward Tudor-Pole

as Cecil Beaton

Douglas Reith

as Horace Featherstonehaugh

Caroline Harker

as Rachel Burke

David Threlfall

as Prince Philip

Ken Drury

as Willie Hamilton MP

Benjamin Whitrow

as Cronin

Jason Thorpe

as Ronald Kiddo

Caroline Loncq

as Anne Tennant

Michael Elwyn

as Archbishop FIsher

Bruno Ouvrard

as French Newsagent

Simon Woods

as Roddy Llewellyn

Dominic Mafham

as Robin Douglas-Home