The document summarizes the different age ratings used by the British Board of Film Classification (BBFC) to inform viewers about the content in a film. The ratings include: Universal (U) for all ages; Parental Guidance (PG) which may have mild language or violence; 12A/12 which can have moderate language, threats, or horror; 15 which can have racist or discriminatory themes as well as depictions of drugs; 18 which is only for adults and can show sexual activity; and R18 which contains explicit sexual content and is only shown in licensed establishments for adults.