Tim Pigott-Smith

Charles

Charlotte Riley

Kate Middleton

Oliver Chris

William

Adam James

Prime Minister Tristram Evans

Richard Goulding

Harry

Max Bennett

Coottsey

Tamara Lawrance

Jess

Margot Leicester

Camilla

Tim McMullan

James Reiss

Priyanga Burford

Mrs Stevens

Katie Brayben

Diana

John Shrapnel

Archbishop of Canterbury

Parth Thakerar

Spencer

Grant Crookes

Mourner

Philip Gascoyne

Admiral (uncredited)