Dear Mrs. Kennedy

Claire Foy

Queen Elizabeth II

Matt Smith

Prince Philip, Duke of Edinburgh

Vanessa Kirby

Princess Margaret

Anton Lesser

Harold Macmillan

Victoria Hamilton

Queen Elizabeth the Queen Mother

Harry Hadden-Paton

Martin Charteris

Lizzy McInnerny

Bobo Macdonald

Chris Gordon

Duke of Edinburgh's Valet

Sylvestra Le Touzel

Dorothy Macmillan

Jodi Balfour

Jackie Kennedy

Michael C. Hall

President Kennedy

Danny Sapani

President Nkrumah

Sam Crane

Patrick Plunket

Joseph Kloska

Porchey

Michael Bertenshaw

Master of the Household

Richard Clifford

Norman Hartnell

Julian Ovenden

Bobby Kennedy

James Hillier

Buckingham Palace Equerry

Will Keen

Michael Adeane

Robert Irons

Freddie Bishop

David Annen

Alec Douglas-Home

James Borthwick

Leonid Brezhnev

Barnabás Tóth

French Diplomat

Skye Hallam

Lee Radziwill

James Garnon

Stanislaw Radziwill

Jeremy Wheeler

Doctor Jacobson

Jacques Boudet

President de Gaulle

John Sackville

S.I.S. Controller

Peter Ellis

Land Agent

Sidwell Ralitsoele

Nkrumah's Aide

Alec Nicholls

Downing Street Aide

Linda Small

Elderly Ghanaian Servant