Helen Mirren as Elizabeth II of the United Kingdom

Michael Sheen as Tony Blair

James Cromwell as Philip of Edinburgh

Helen McCrory as Cherie Blair

Alex Jennings as Charles III of the United Kingdom

Roger Allam as Robin Janvrin

Sylvia Syms as Elizabeth Bowes-Lyon

Paul Barrett as Trevor Rees-Jones

Tim McMullan as Stephen Lamport

Douglas Reith as Lord Airlie

Mark Bazeley as Alastair Campbell

Robin Soans as Equerry

Lola Peploe as Janvrin's Secretary

Joyce Henderson as Balmoral Maid

Pat Laffan as Head Ghillie

Amanda Hadingue as Queen's Dresser

John McGlynn as Balmoral Head Ghillie

Gray O'Brien as Charles' Valet

Dolina MacLennan as Balmoral Switchboard Operator

Julian Firth as Blair's Aide

Earl Cameron as Portrait Artist

Elliot Levey as TV Director

Anthony Debaeck as Catholic Priest

Wolfgang Pissors as German Reporter

Xavier Castano as French Bodyguard

Khanya Mkangisa as