The document summarizes British film rating classifications. The U rating means a film is suitable for all ages 4 and over, though some scenes may upset younger children. PG means parental guidance is recommended as some scenes may be unsuitable for children under 8. 12A means children under 12 can watch with an accompanying adult. 15 and 18 ratings mean no one under those ages can view the films. The 15 rating allows strong violence, language, sexual content but not sexual violence. The 18 rating allows very strong content including violence, language, sexual activity and themes. The R18 rating is legally restricted to explicit adult sexual content sold in licensed shops or cinemas to adults only.