The document discusses the British board film classification ratings system. It explains that U rated films are suitable for preschool children and contain no violence. PG rated films are generally suitable for children but may contain mild language or scenes unsuitable for young kids. Films rated 12A and 12 are not suitable for unaccompanied children under 12 and may contain stronger language or violence. Films rated 15 and 18 are restricted to older teenagers and adults respectively and can contain graphic violence, strong language, sexual content and nudity.