Richard Attenborough as Jack Read

Sheila Sim as Lynne Hartley

Bernard Miles as Mr. Read

Cecil Trouncer as Lloyd Hartley

Joan Hickson as Mrs. Read

Edith Sharpe as Mrs. Hartley

Robert Flemyng as Nigel Lorraine

John Forrest as Fitch

Herbert Lomas as Sir James Corfield

Brenda Hogan as Lorna Beckett

Wally Patch as Uncle Percy

Olive Sloane as Aunt Mabel

Hay Petrie as Peck

Timothy Bateson as Tracey

Kynaston Reeves as The Bishop

Anthony Nicholls as Mr. Stringer

Clive Baxter as Gregory

Basil Cunard as Buckton

Maureen Glynne as Bessie

Anthony Newley as Miles Minor

Oscar Quitak as David Tracey

Peter Reynolds as Grimmett

Tony Wager as Bert

Percy Walsh as Alec Stevens

Norman Watson as Fanshaw

Ray Cooney as

Ambrose Day as

Robert Desmond as (Uncredited)

Edward Judd as

James Kenney as

Michael McKeag as

Jack McNaughton as

Desmond Newling as

Digby Wolfe as