Mosley

Hugh Bonneville

Bob Boothby

Jonathan Cake

Oswald 'Tom' Mosley

Jemma Redgrave

Cimmie Curzon

Flora Montgomery

Baba

Windsor Davies

David Lloyd George

Ralph Riach

Ramsay MacDonald

Orlando Wells

Cecil Beaton

Emma Davies

Diana Mitford Guinness

Robert Lang

Lord Curzon

Philip Dunbar

Philip Sassoon

Debora Weston

Maxine Elliott

Paul Jerricho

Harold Merrick

Helena McCarthy

Old Lady

Hugh Simon

Winston Churchill

Dermot Martin

Michael O'Sullivan

Connor Byrne

Liam

Caroline Langrishe

Jane Bewley

John D. Collins

Toastmaster

Jeremy Child

Maj. Bewley

Berwick Kaler

Arthur Henderson

Gresby Nash

Fruity Metcalf

Arturo Venegas

Count Grandi

Stephen Gressieux

Mussolini

Nigel Davenport

Lord Rothermere

Erich Redman

Joseph Goebbels

Martina Berne

Magda Goebbels

Charlie Carter

Footman (uncredited)