The document outlines the audience classification system used in the UK for films. It describes the content restrictions and guidelines for films rated as universal ("U"), parental guidance ("PG"), 12A, 12, 15, and 18. Films rated U are suitable for all ages, while each increasing rating number allows for more explicit or mature content such as violence, language, sexual content, and drug use. The ratings are designed to help inform parents and prevent children from viewing inappropriate materials.