Genevieve O'Reilly as Princess Diana

Patrick Baladi as Dodi Al Fayed

Carlo Ferrante as Henri Paul

Nadim Sawalha as Mohamed Al Fayed

Charlie Manton as Prince Harry

Shaun Dooley as Trevor Rees Jones

James Barriscale as Kez Wingfield

Wilfred Benaïche as Claude Rouiet

Jake Taylor Shantos as Prince William

Simon Lenagan as Paul Burrell

Annabelle Wallis as Kelly Fisher

Richard Clifford as Derek Deane

John Warnaby as Richard Kay

Bruno Ouvrard as Jean-François Musa

Annabel Mullion as Rosq Monckton

François Domange as Thierry Rocher

Emily Stott as Myriah Daniels

Derek Deane as Self - Artistic Director, English National Ballet

Mohamed Al-Fayed as Self - Dodi's Father

Ken Wingfield as Self - Al Fayed Bodyguard

Paul Bennett as Self - Picture Editor, The Sunday Mirror

Bridget Rowe as Self - Editor, The Sunday Mirror

Myriah Daniels as Self - Dodi's Personal Therapist

Claude Garrec as Self - Best Friend of Henri Paul

Scott Davidson as Rene (uncredited)

Michael Thompson as Journalist (uncredited)