Aberfan

Olivia Colman

Queen Elizabeth II

Tobias Menzies

Prince Philip, Duke of Edinburgh

Josh O'Connor

Charles III of the United Kingdom

Helena Bonham Carter

Princess Margaret

Ben Daniels

Lord Snowdon

Jason Watkins

Harold Wilson

Charles Dance

Louis Mountbatten

Marion Bailey

Queen Elizabeth the Queen Mother

Erin Doherty

Princess Anne

Andrew Buchan

Andrew Parker Bowles

Geraldine Chaplin

Wallis Simpson

Jane Lapotaire

Alice of Battenberg

Michael Maloney

Edward Heath

Emerald Fennell

Camilla Shand

Ifan Huw Dafydd

Howell

Richard Harrington

Fred Phillips

Jack Parry-Jones

Teacher

Dyfrig Morris

Thomas Edwards

Gwyneth Keyworth

Gwen Edwards

Charlotte Gray

Beryl Moss

Alison Jones

Mary Phillips

Bea Stevens-Johnson

Sarah Edwards

Charlie Baron

Rhys Edwards

Ana Morgan

Helen Edwards

Peredur Hedd Llywelyn

Geraint Moss

Anthony O'Donnell

Mayor of Merthyr Tyfdil

Hugh Thomas

Bishop of Llandaff

Dafydd Hywel

Shopkeeper

Matthew Steer

Wilson's Aide

Simon Armstrong

Councillor

Steven Elliot

Geoffrey Morgan

David Rees Talbot

Alun Jenkins

Nicholas McGaughey

Supervisor

Lynn Hunter

Colliery Secretary

Lorraine Ashbourne

Barbara Castle

Aden Gillett

Richard Crossman

David Rintoul

Michael Adeane

Sinead Matthews

Marcia Williams

Mark Dexter

Tony Benn

Charles Edwards

Martin Charteris

Sam Phillips

Equerry

David Charles

George Thomas

Rebecca Harries

Local Woman 1

Catrin-Mai Huw

Local Woman 2

Michelle McTernan

Local Woman 3

Mark Lewis

Local Man 1

Rhys Parry Jones

Local Man 2

Grahame Fox

Worker 1

Jason May

Worker 2

Simon Nehan

Worker 3

David Charles

George Thomas