You're Only Young Twice!

Duncan Macrae

Professor "Haywire" Hayman

Joseph Tomelty

Connell O'Grady aka Dan McEntee

Patrick Barr

Sir Archibald Asher

Charles Hawtrey

Adolphus Hayman

Diane Hart

Ada Shore

Robert Urquhart

Sheltie

Edward Lexy

Lord Carshennie

Jacqueline Mackenzie

Nellie Kelly