The Monthly Film Bulletin wrote: "Medium-paced British comedy thriller. Despite an obvious denouement and a somewhat disconcerting number of loose ends, the plot builds up a reasonable degree of suspense; and the leading players, notably John Heller as the professional spy, give confident performances."[5]
The Radio Times described it as "an uncomfortable mix of romance and myster.y"[6]
Britmovie called it a "light-hearted spy story with a touch of romance."[7]
In British Sound Films: The Studio Years 1928–1959David Quinlan rated the film as "mediocre", writing: "Some thrills, some unintentional laughs."[8]