You're Only Young Twice!

Duncan Macrae

Professor "Haywire" Hayman

Joseph Tomelty

Connell O'Grady aka Dan McEntee

Патрик Барр

Sir Archibald Asher

Charles Hawtrey

Adolphus Hayman

Diane Hart

Ada Shore

Robert Urquhart

Sheltie

Ronnie Corbett

Maither

Reginald Beckwith

Radio reporter

Russell Waters

Professor Baikie

Roddy McMillan

Milligan

Alastair Hunter

Desk Sergeant

Archie Duncan

Police Constable

Edward Lexy

Lord Carshennie

Jacqueline Mackenzie

Nellie Kelly

Eric Woodburn

The Bedellus

Molly Urquhart

Lady Duffy

Wendy Noel

Miss Mear

Andrew Downie

Student