This document provides information on film rating criteria in the UK. It outlines the criteria for 15 and 18 rated films. An 15 rated film can show nudity and sexual activity without graphic detail, as well as strong language and violence, but cannot promote things like drug use or dangerous behavior that could be imitated. An 18 rated film has no age restrictions for viewing in cinemas or renting, but exceptions may be made for content that is illegal, promotes harm to individuals or society, or contains explicit sexual images without proper context justification. The guidelines aim to balance adult freedom of choice with preventing potential harm.