The British Board of Film Classification (BBFC) regulates age ratings for films in the UK. Films are carefully assessed by examiners based on factors like discrimination, drugs, violence, and sexual content. They are then placed into one of several age rating categories: U (universal), PG (parental guidance), 12A, 15, or 18. Each category has specific restrictions on what types of content are allowed. For example, a U film can have very mild violence while an 18 film has almost no restrictions. While the BBFC aims to properly rate films for audiences, their standards may change over time or differ from public opinions, potentially impacting filmmakers and their target audiences.