Gold Stick

Olivia Colman

Queen Elizabeth II

Tobias Menzies

Prince Philip, Duke of Edinburgh

Helena Bonham Carter

Princess Margaret

Gillian Anderson

Margaret Thatcher

Josh O'Connor

Prince Charles

Emma Corrin

Lady Diana Spencer

Marion Bailey

Queen Elizabeth the Queen Mother

Erin Doherty

Princess Anne

Stephen Boxer

Denis Thatcher

Isobel Eadie

Sarah Spencer

Michael Colgan

IRA Lieutenant

Patrick Toomey

Philip's Private Secretary

Callum Coates

Butler at Althorp

Ronald Moger

Reporter

Alex Harland

Newsreader

Harriet Benson

Patricia Knatchbull

Valerie Sarruf

Dowager Lady Brabourne

Mark Carlisle

Lord Brabourne

Mark Brennan

Thomas McMahon

Gerard Ban Lavery

Fisherman

Rob Curling

Showjumping Commentator

Richard Stirling

Showjumping Timekeeper

Roy Sampson

Laurens van der Post

Amy Searles

Kanga

Andrew Piper

Balmoral Master of the Household

Laura Cairns

Balmoral Maid

Nicholas Day

Jim Prior

Richard Syms

Lord Hailsham

Peter Pacey

Lord Soames

Guy Siner

Francis Pym

Letty Thomas

Virginia Pittman

Allegra Marland

Carolyn Pride

Flora Higgins

Anne Bolton

Freddie Fox

Mark Thatcher

Rebecca Humphries

Carol Thatcher

Paul Bigley

John Nott

Geoffrey Breton

Mark Phillips

Don Gallagher

Willie Whitelaw

Charles Edwards

Martin Charteris

Penny Downie

Duchess of Gloucester

Angus Imrie

Prince Edward

Richard Goulding

Edward Adeane

Kevin McNally

Bernard Ingham

Paul Jesson

Sir Geoffrey Howe

Michael Buerk

Newsreader (voice)

Tom Byrne

Prince Andrew

Sam Phillips

Equerry

John Humphrys

Newsreader (voice)

Charles Dance

Lord Mountbatten

Brandon Whitt

Timothy Knatchbull

Evan Whitt

Nicholas Knatchbull

Patrick McBrearty

Francis McGirl

David Kerr

Showjumping Judge