The Monthly Film Bulletin wrote: "Almost every character in the film is meant to be funny, and the result of such forced treatment is a pace that is frantic rather than fast. Inventiveness is forgotten in an attempt to drag in as many comic asides as possible, even the weather-making demonstration being unimaginatively developed. Benny Hill's talent for impersonation is insufficiently exploited, though his brief moments in disguise are his best. Despite an engaging diffidence, his own personality seems rather colourless. The other principals are generally competent, though little use is made of the distinguished supporting cast." [8]
Variety said "There is plenty to please the fans of TV comic Benny Hill in this rollicking slapstick comedy, but the situations and stock ingredients are corny and unlikely to make the grade with more fastidious picturegoers. Pic will cash in with the lower bracket audiences and nabe houses... [Hill] exploits his fatuous personality to the full, while Belinda Lee, as his casually acquired femme friend, lends fleeting glamour to an almost all-male background ... Seasoned players supply convincing support in contrasting roles, and the whole is briskly welded together." [9]
In British Sound Films: The Studio Years 1928–1959 David Quinlan rated the film as "good", writing: "Believable characters help in wildly comic story. Unpolished, but very funny." [10]
Leslie Halliwell said: "Lively but disappointing film debut for a star comic whose screen personality proved too bland." [11]
The Radio Times Guide to Films gave the film 2/5 stars, writing: "Considering he was then one of Britain's most important directors, Basil Dearden might have seemed a peculiar choice for TV comic Benny Hill's sole starring venture. But Dearden adeptly judges the slapstick content of this amiable caper, in which Hill's hapless gumshoe bungles along in pursuit of eastern bloc spies David Kossoff and George Margo. Belinda Lee shows to advantage as Benny's sidekick, but this was all a bit of a come down for T.E.B. Clarke, who had penned some of Ealing's best-known comedies." [12]