Wilfrid Grantham
— The Lepidopterist / First Snail
Edmund Willard
— The Tranp
Pamela Standish
— The Chrysalis
Frank Birch
— Mr. Beetle / Commander of the Yellows
Maire O'Neill
— Mrs. Beetle / Philanthropist
Charles Peters
— Robber Beetle/Journalist
Rupert Bruce Lockhart
— The Ichneumon Fly / Inventor
Sheila Kay
— The Larva
Leslie French
— Mr. Cricket / Second Snail
Wendy Toye
— Mrs. Cricket
Wilfred Franks
— The Blind Ant Timekeeper
Geoffrey Wincott
— The Parasite