The title character of "Beat Girl" was played by starlet Gillian Hills, who later went on to have numerous small roles in 1960s and 1970s films, such as "Blowup" and "A Clockwork Orange", and became a successful ""ye-ye"" singer in France. "Beat Girl" marked the first film roles of British pop idol Adam Faith and actor Peter McEnery, although it was not released until after other films featuring Faith ("Never Let Go") and McEnery ("Tunes of Glory") had already come out. The film also features Christopher Lee and Nigel Green as strip joint operators, and Oliver Reed in a small role as one of the "beat" youth.