Well, IMDb have turned out useless today, stopping anyone accessing cast, reviews etc. Uh huh. I’ve included something from Wiki below the film:

According to Kinematograph Weekly the film did well at the British box office in May 1940.^[9]

The TV Guide online review called it “An odd little comic thriller – who, except perhaps Michael Powell, would cast 47-year-old Cabinet of Dr. Caligari (1920) star Conrad Veidt as a light romantic hero?”^[10]

Time Out wrote that “Less stylish than The Spy in Black, this espionage thriller is more fun, with its tongue-in-cheek plot revelling in Hitchcockian eccentricities”. Radio Times describes it as “A neat Second World War espionage thriller that depicts a London crawling with spies”.

Dennis Schwartz of Ozus’ World Movie Reviews had mixed feelings, giving it a grade of B−. “The brisk pace and its added touches of quaintness, made the film endearing inspite [sic] of the lack of any character study and the one-dimensional tone of the villains.” However, he wondered “mhow much better a more romantically inclined hero would have fared in his [Veidt’s] role.”^[11]