[2] The film also featured Steve Marriott (later singer and guitarist with Small Faces and Humble Pie),[3] and Mitch Mitchell, later the drummer of The Jimi Hendrix Experience.

Dave Martin and his friends Phil, Ron and Ricky are Post Office messenger boys who have formed their own four piece rock 'n' roll beat group, the Smart Alecs.

Finally with the help of Dave's girlfriend Jill and his father, Watson and columnist Nancy Spain are brought by taxi to meet the group and the Smart Alecs then make good.

The song "Live It Up" featured at the end of the film is not credited because the "group" shown playing it (Hemmings and Heinz on guitars, Pike on bass and Marriott on drums) were not the actual recording artists.

The Monthly Film Bulletin wrote: "Something of a festival of electric guitars and echo chamber effects, the string of musical numbers are chiefly in the current pop and beat idiom, though Kenny Ball and his Jazzmen contribute a couple of welcome items in traditional jazz style – even if one of these is a perversion of the Turkish March from Mozart's A major Piano Sonata.

Icon-in-waiting David Hemmings looks distinctly uncomfortable as the Post Office messenger who defies trad dad Ed Devereux to bid for the top, prompting a hackneyed subplot about an audition and a big American producer.