Alec Guinness
Edward Henry 'Denry' Machin
Glynis Johns
Ruth Earp
Valerie Hobson
Countess of Chell
Petula Clark
Nellie Cotterill
Edward Chapman
Mr. Duncalf
George Devine
Mr. Calvert
Joan Hickson
Mrs. Codleyn
Frank Pettingell
Police Superintendent
Gibb McLaughlin
Emery
Peter Copley
P. Shillitoe (uncredited)