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, drug use and other themes. The ratings provide guidelines on issues that may disturb younger viewers to help parents decide what is appropriate for their children.