Percy Boon

Richard Attenborough

Mr. Squales

Alastair Sim

Uncle Henry

Stephen Murray

Mrs. Josser

Fay Compton

Mr. Josser

Wylie Watson

Doris Josser

Susan Shaw

Connie Coke

Ivy St. Helier

Headlam Fynne

Hugh Griffith

Mrs. Vizzard

Joyce Carey

Bill

Andrew Crawford

The Blonde

Eleanor Summerfield

Mrs. Boon

Gladys Henson

Jimmy

Jack McNaughton

Jack Rufus

Maurice Denham

Mr Battlebury

Aubrey Dexter

Verriter

Henry Hewitt

Police Superintendent

Henry Edwards

Mr. Chinkwell

Arthur Howard

Mrs. Jan Byl

Fabia Drake

Campbell

Hatton Duprez

Night Club Receptionist

Sydney Tafler

Mr. Justice Plymme

Ivor Barnard

John H. Roberts

Mr. Veezey Blaize K.C

Kenneth Downey

Mr. Henry Wassall

Cecil Trouncer

Inspector Cartwright

George Cross

Detective Sergeant Wilson

Cyril Chamberlain

Usher

Lionel Grose

Clerk of the Court

Russell Waters

Detective Sergeant Taylor

Edward Evans

Mr. Barks

John Salew

Pathologist

Michael Kent

Foreman of the Jury

Basil Cunard

1st Warden

Wensley Pithey

Female Employee

Myrette Morven

Miss Bowker

Alexis France

2nd Warden

Manville Tarrant

Commuter on Train (uncredited)

Arthur Lowe

Drunk

Arty Ash

Clerk (uncredited)

Ewen Solon

Old Gentleman

J.H. Roberts

Bystander (uncredited)

Jack May

Bystander (uncredited)

Reg Thomason

Warder

Stanley Rose

1st Policeman (uncredited)

Ewan Roberts

Prison Officer

John Boxer

2nd Policeman (uncredited)

Stanley Beard

Narrator (uncredited)

Leo Genn

Police Sergeant

Owen Reynolds

Doctor

D.A. Mehan

Policewoman

Susan Buret

Mechanic

Frank Ling

Clerk

Alan Saynes

Newsboy

Frederick Knight

Taxi Driver

Leonard Morris

Woman #1

Ivy Collins

Police Constable

Joe Clark

Sister

Lala Lloyd

Woman #2

Nellie Sheffield

Miss Sweeting

Paula Young

Schoolmistress

Grace Allardyce

Newspaper Seller

Alexander Field

Woman at Door

Elsie Bernard

John Gregson