Phyllis Calvert

Evelyn Acheson

Eric Portman

Henry Acheson

Stanley Baker

Stephen Lorimer

Mandy Miller

Elizabeth Lorimer

Dora Bryan

Cassie

Percy Herbert

Det. Sgt. Taylor

Joan Benham

Vera McNally

Victor Maddern

Bert

Martin Miller

Professor Topolski

Joan Hickson

Cook

Alfie Bass

Ticket Collector

Bruce Beeby

Policeman

Grace Arnold

Mrs. Groves

Molly Urquhart

Mrs. Parsons

Estelle E. Richmond

Nurse

Peter Burton

Howard Forbes (uncredited)

Maggie Smith

Party Guest (uncredited)

Christopher Toyne

Peter McNally (uncredited)

Carol White

Elizabeth's Friend (uncredited)