Jack Hawkins
Dr. Nicholas

Donald Pleasence
Prof. R.C. Tremayne

Georgia Brown
Fay Patterson (segment "Mr. Tiger")

Donald Houston
Sam Patterson (segment "Mr. Tiger")

David Wood
Tutor (segment "Mr. Tiger")

Suzy Kendall
Ann / Beatrice (segment "Penny Farthing")

Peter McEnery
Timothy Patrick (segment "Penny Farthing")

Beth Morris
Polly (segment "Penny Farthing")

Joan Collins
Bella Thompson (segment "Mel")

Michael Jayston
Brian (segment "Mel")

Kim Novak
Auriol (segment "Luau")

Michael Petrovitch
Kimo (segment "Luau")

Mary Tamm
Ginny (segment "Luau")

Lesley Nunnerley
Vera (segment "Luau")

Leon Lissek
Keoki (segment "Luau")

Zohra Sehgal
Malia (segment "Luau")

Charles Gray
Nicholas (Clinic Link Episodes segment) (voice)