George Formby

George Trotter

Billy Caryll

Tiger Tubbs

Hilda Mundy

Ma Tubbs

Gaston Palmer

Le Grand Gaston

Jack Daly

Terry O'Rourke

Carl Jaffe

Hilary Vance

Marjorie Browne

Betty Dickson

Wally Patch

Det Sgt. Carp

Ian Fleming

Chief Inspr. Twyning

Vincent Holman

Erasmus Montague

Dennis Wyndham

Tom Driscoll

Gordon McLeod

Supt. Belstock

Merle Tottenham

Tessie

Georgina Cookson

Willow Thane

Jack Raine

J.B. Cato

Honor Boswell

Alpha

Beryl Boswell

Omega

Jacques Brown

Professor Borgensen (uncredited)