The British Board of Film Classification (BBFC) classifies trailers by giving them an age certificate. This gives consumers enough information to see whether what they are purchasing is suitable for audiences at home.
Universal ratings means that the film is suitable for all audiences, although it does contain some scenes of violence and only mild bad language is used.
Stands for Parental guidance, meaning that the film is appropriate for all viewers although some scenes may disturb younger viewers. If it has been given a PG rating then the chances are that is was not made with young audiences in mind.
12A certificates mean that children under 12 can see the film as long as an adult watches it with them. 12 certificates are only on DVD's whereas 12A certificates are only for the cinema.
No one under the age of 15 can watch a 15 certified film. 15 films generally contain strong violence and frequent strong language. Many horror films are 15 as they contain strong menace and threat.
No one under the age of 18 can watch an 18 certified film. 18 films have no limits on what they can contain. Scenes such as blood and gore are usually seen in great detail. (NL)