This document summarizes the age rating symbols used in the UK for films and videos. It explains that a U rating means films are suitable for all ages, PG means parental guidance is needed for children under 8, 12A means children under 12 need adult accompaniment, and 12, 15 and 18 mean access is restricted to those age groups and older due to increasingly strong violence, language, sexual content or other adult themes. An R18 rating restricts a film to licensed adult venues.