Soundtrack
The official soundtrack contains no songs sung by either the Sex Pistols or Sid Vicious. Much of the actual film's soundtrack (as opposed to soundtrack album) was composed by Joe Strummer, who was contractually limited to contribute only two songs. Nevertheless, he continued to contribute more (unpaid) work because of his interest in the project and composing for film in general. This additional material was credited to fictitious bands in the credits, so as to keep Strummer's label, Epic Records, from knowing what he had done. Another large portion of the music was composed by The Pogues.
Read more about this topic: Sid And Nancy