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John Cleese
Sherlock Holmes

William Rushton
Dr. Watson

Bill Maynard
Frank Potter

Josephine Tewson
Lady Cynthia

Norman Bird
Inspector Street

Larry Martyn
Fu Manchu

Michael Knowles
Rupert

Frank Muir
Self

Dawn Addams
Self

Ivor Salter
Airport Loader

Rosemary Lord
Mabel

Chic Murray
Constable