Rex Harrison as Jimmy Broadbent

Kay Kendall as Sheila Broadbent

John Saxon as David Parkson

Sandra Dee as Jane Broadbent

Angela Lansbury as Mabel Claremont

Peter Myers as David Fenner

Diane Clare as Clarissa Claremont

Sheila Raynor as Broadbents' Maid (uncredited)

Ambrosine Phillpotts as Miss Grey (uncredited)

Henri Guégan as Man at the Airport (uncredited)

René Aranda as Quaglino Diner (uncredited)

Georges Billy as Quaglino Diner (uncredited)

Jean-Paul Blonday as Quaglino Diner (uncredited)

Pierre Vaudier as Quaglino Diner (uncredited)

Charles Cullum as English Colonel (uncredited)

Roger LaVern as Soldier on Guard (uncredited)

Charles Herbert as (uncredited)

Carl Jablonski as Dancer (uncredited)

Michel Thomas as Quaglino Diner (uncredited)