Peter Sellers

Dodger Lane

Wilfrid Hyde-White

Soapy Stevens

Maurice Denham

Governor Horatio Bennett

Irene Handl

Mrs. Price

David Lodge

Jelly Knight

Lionel Jeffries

Chief Prison Officer Sidney Crout

Liz Fraser

Ethel

Bernard Cribbins

Lennie Price

Beryl Reid

Miss Pringle

Walter Hudd

Reverend Patterson

George Woodbridge

Chief Prison Officer Jenkins

John Glyn-Jones

Lawyer

Cyril Chamberlain

Day Gate Warder

Noel Hood

Miss Prescott

Mario Fabrizi

Jones

Thorley Walters

Colonel Parkright

Myrette Morven

Miss Meakin

John Wood

Captain

Robert James

Police Superintendent

Warren Mitchell

Tailor

Arthur Mullard

Fred

Ian Wilson

Milkman

John Harvey

Rockhampton Prison Governor

Johnny Vyvyan

Shorthouse

Abe Barker

Sam (uncredited)

Robert Day

Minor Role (uncredited)

Olga Dickie

Woman in Pub (uncredited)

Jack May

Prison Visitor (uncredited)

Guy Standeven

Prisoner (uncredited)

Hedger Wallace

Detective (uncredited)