Gordon Harker

Inspector Hornleigh

Alastair Sim

Sergeant Bingham

Phyllis Calvert

Mrs. Wilkinson

Edward Chapman

Mr. Blenkinsop

Charles Oliver

Dr. Wilkinson

Raymond Huntley

Dr. Kerbishley

Percy Walsh

Inspector Blow

David Horne

Commissioner

Peter Gawthorne

Colonel

Wally Patch

Sergeant Major

Betty Jardine

Daisy

O.B. Clarence

Professor Mackenzie

John Salew

Mr. Tomboy

Cyril Cusack

Postal Sorter

Bill Shine

Hotel Porter

Walter Forde