This document summarizes the British Board of Film Classification (BBFC) rating system for films and videos in the United Kingdom. It explains the criteria for films rated U, PG, 12A, 15, and 18 - outlining what types of content are acceptable at each rating level in terms of language, violence, sex, drugs and other themes. The ratings provide guidelines on issues like the frequency and severity of language, depictions of sexual activity and violence, and whether children of certain ages can view films unaccompanied.