Ian Carmichael as Jack Goddard

Janette Scott as Peggy Goddard

Sid James as Sid Randall

Liz Fraser as Sandra Marsh

Dennis Price as Leonard Watson

Reginald Beckwith as Alfred Harper

Irene Handl as Mrs. Harper

Noel Purcell as O'Malley

Miles Malleson as Rev. Thomas

John Harvey as Johnnie

Terry Scott as 2nd River Policeman

Bill Shine as 2nd Thames Conservancy Officer

Michael Shepley as Granville-Carter

Toby Perkins as Pukka Type

Jacques Cey as French Official

Hedger Wallace as 1st River Policeman

Desmond Roberts as Freighter Captain

Peter Swanwick as Freighter Pilot

Gerald Campion as Charlie

Graham Stark as Flowerman

Gladys Henson as Madame de Sola

Willoughby Goddard as Prospective Purchaser

Marianne Stone as Prospective Purchaser's Wife

Dick Bentley as Ron (Uncredited/Voice)

June Whitfield as Eth (Uncredited/Voice)

Naunton Wayne as 1st Thames Conservancy Officer

Tom Gill as Customs Officer (uncredited)