The document provides information on the British Board of Film Classification (BBFC) rating system, summarizing the content restrictions and guidelines for films rated U, PG, 12A, 15, and 18. Films rated U are generally suitable for all ages four and over, though some content is restricted. PG films can contain mild language and implied sexual references. Films rated 12A can show brief and discreet sex scenes along with infrequent strong language. The 15 rating allows for strong language, sexual activity without graphic detail, and strong horror content. The 18 rating has no content restrictions and can include very strong language, graphic sex scenes, and violence with strong detail.