Jack HawkinsDr. Nicholas

Donald PleasenceProf. R.C. Tremayne

Georgia BrownFay Patterson (segment "Mr. Tiger")

Donald HoustonSam Patterson (segment "Mr. Tiger")

Russell LewisPaul (segment "Mr. Tiger")

David WoodTutor (segment "Mr. Tiger")

Suzy KendallAnn / Beatrice (segment "Penny Farthing")

Peter McEneryTimothy Patrick (segment "Penny Farthing")

Neil Kennedy1st Removal Men (segment "Penny Farthing")

Richard Connaught2nd Removal Man (segment "Penny Farthing")

Beth MorrisPolly (segment "Penny Farthing")

Frank ForsythUncle Albert (segment "Penny Farthing")

Joan CollinsBella Thompson (segment "Mel")

Michael JaystonBrian (segment "Mel")

Kim NovakAuriol (segment "Luau")

Michael PetrovitchKimo (segment "Luau")

Mary TammGinny (segment "Luau")

Lesley NunnerleyVera (segment "Luau")

Leon LissekKeoki (segment "Luau")

Zohra SehgalMalia (segment "Luau")

Charles GrayNicholas (Clinic Link Episodes segment) (voice)

Freddie FrancisDirector

Jennifer JayneWriter