James Mason

Mr. Grimes / Voic...

Bernard Cribbins

Mr. Masterman / V...

Billie Whitelaw

Mrs. Doasyouwould...

Tommy Pender

Tom

Samantha Gates

Elly

Joan Greenwood

Lady Harriet

David Tomlinson

Sir John / Voice ...

Jon Pertwee

Salmon

David Jason

(voice)

Una Stubbs

(voice)