Not the most exciting of police thrillers, but it has some good performances, a great car chase and the most amazing 50s London location shooting. What the later, Crime Wave (1954) does for Los Angeles, Blue Lamp does for London. City streets, canal side shots, bomb sites, trolley buses, cobbled streets and more. The film also showcases, Jack Warner, whose role would be reprieved for TV's Dixon of Dock Green shown from the late 50s onward and Dirk Bogarde who would become a matinée idol before becoming an even bigger star. Jimmy Hanley should also be mentioned as he too became something of an institution, in my house anyway, when in the late 50s again, he hosted Jim's Inn. This was little more than an excuse to bring products to the attention of the viewing public without actually advertising them. ' What are these, Jim, any good are they?' Yes, just 15 minutes or so of b/w TV promotion and we sat glued! Ah memories