Peter O'Toole

Jack 14th Earl of Gurney

Alastair Sim

Bishop Lampton

Arthur Lowe

Tucker

Harry Andrews

13th Earl of Gurney

Coral Browne

Lady Claire Gurney

Michael Bryant

Dr. Herder

Nigel Green

McKyle

William Mervyn

Sir Charles Gurney

Carolyn Seymour

Grace Shelley

James Villiers

Dinsdale

Kay Walsh

Mrs. Piggott-Jones

Patsy Byrne

Mrs. Treadwell

Graham Crowden

Truscott

Hugh Burden

Matthew Peake

James Grout

Inspector Brockett

James Hazeldine

Fraser

Henry Woolf

Inmate

Oliver MacGreevy

Inmate

Leslie Schofield

McKyle's Assistant

Ronald Adam

Lord

Llewellyn Rees

Lord

Kenneth Benda

Lord Chancellor

Margaret Lacey

Midwife (uncredited)

Robert Rietti

Various Roles (voice) (uncredited)

Guy Standeven

Peer (uncredited)