Kristen Stewart

Diana

Timothy Spall

Major Alistair Gregorys

Jack Nielen

William

Freddie Spry

Harry

Jack Farthing

Charles

Sean Harris

Darren

Stella Gonet

The Queen

Richard Sammel

Prince Philip

Elizabeth Berrington

Princess Anne

Lore Stefanek

Queen Mother

Amy Manson

Anne Boleyn

Sally Hawkins

Maggie

James Harkness

Footman Paul

Laura Benson

Angela (Dresser)

Wendy Patterson

Maria (Older Maid)

John Keogh

Michael (Charles' Valet)

Ryan Wichert

Staff Sergeant Wood

Michael Epp

Lance Corporal Jacobs

Tom Hudson

Police Constable Thomas

Niklas Kohrt

Prince Andrew

Olga Hellsing

Sarah Ferguson (uncredited)

Sami Amber

Boy (Roadhouse Cafe) (uncredited)