Ian Carmichael

Jack Goddard

Janette Scott

Peggy Goddard

Sidney James

Sid Randall

Liz Fraser

Sandra Marsh

Dennis Price

Leonard Watson

Reginald Beckwith

Alfred Harper

Irene Handl

Mrs. Harper

Noel Purcell

O'Malley

Miles Malleson

Rev. Thomas

John Harvey

Johnnie

Terry Scott

2nd River Policeman

Bill Shine

2nd Thames Conservancy Officer

Michael Shepley

Granville-Carter

Toby Perkins

Pukka Type

Jacques Cey

French Official

Hedger Wallace

1st River Policeman

Desmond Roberts

Freighter Captain

Peter Swanwick

Freighter Pilot

Gerald Campion

Charlie

Graham Stark

Flowerman

Gladys Henson

Madame de Sola

Willoughby Goddard

Prospective Purchaser

Marianne Stone

Prospective Purchaser's Wife

Dick Bentley

Ron (Uncredited/Voice)

June Whitfield

Eth (Uncredited/Voice)

Naunton Wayne

1st Thames Conservancy Officer

Tom Gill

Customs Officer (uncredited)