The BBFC document outlines their film and video content rating categories from most restrictive to least restrictive. The categories are U (Universal), PG (Parental Guidance), 12, 12A, 15, 18, and R18. Each category description provides guidelines around acceptable levels of themes such as discrimination, drugs, horror, language, nudity, sex, violence and imitable behaviors that may be depicted. The most restrictive categories allow for only mild or discreet depictions while the least restrictive categories may contain strong depictions but within legal bounds.