¡Prudencia...! Prudencia

Deborah Kerr

Prudence Hardcastle

David Niven

Gerald Hardcastle

Robert Coote

Henry Hardcastle

Irina Demick

Elizabeth Brett

Joyce Redman

Grace Hardcastle

Judy Geeson

Geraldine Hardcastle

Keith Michell

Dr. Alan Huart

Edith Evans

Roberta Bates

David Dundas

Tony Bates

Vickery Turner

Rose

Hugh Armstrong

Ted

Peter Butterworth

Chemist

Moyra Fraser

Woman in Tea Shop

Annette Kerr

Gerald's Secretary

Harry Towb

Racetrack Official

Jonathan Lynn

Chemist's Assistant

Ivor Dean

City Banker in Taxi Cab (uncredited)

Arthur Hewlett

Mr. Ferguson (uncredited)

Michael Hordern

Dr. Morley (uncredited)

John Tatham

Man Sitting in Grandstand at the Races (uncredited)