Target Audience (BBFC)

U:
The U symbol stands for Universal. A U film should be suitable for audiences aged four years and over.
In a U movie the only "bad language" we listen would be word like "damn" or "hell", not more than this.
No sexual behaviour, violence and use of drugs is shown in a U rated movie.


PG:
PG stands for Parental Guidance. This means a film is suitable for general viewing, but some scenes may be unsuitable for young children. A PG film should not unsettle a child aged around eight or older.
PG works can explore challenging issues such as bullying, bereavement or racism. In a PG rated movie we can use "shit" or "son of a bitch" as a bad language, but only in dialogue were people is clearly angry. There wouldn't be any sexual references, and violence would usually be mild. Instead for drugs there would be some references to illegal drugs and drugs but is not focused. It's up to the knowledge of the child to understand it or no.


12A AND 12:
Films classified 12A and video works classified 12 contain material that is not generally suitable for children aged under 12. The differences between a film rated 12A and a film rated 12 is that the children under 12 cannot watch a movie rated 12 without an adult.

The BBFC's Guidelines state that strong language (e.g. 'f***') may be passed at 12 or 12A. There aren't any sing of discriminatory language. Sex may be briefly and discreetly portrayed at 12A or 12. Verbal sex references should not go beyond what is suitable for young teenagers. At 12A, moderate violence is allowed but not in detail. There should be no emphasis on injuries or blood, but occasional gory moments may be permitted if they can be justified by their context.

Some horror films are rated 12 and 12A, as long as long sequence of horror and violence and disturbing scene are not frequent.

There would be more sight of drugs and illegal drugs but again it won't be in detail.
 
 15:
No-one under 15 is allowed to see a 15 film at the cinema or buy/rent a 15 rated video. 15 rated works are not suitable for children under 15 years of age.
A 15 rated movie can include any of the following:

•   strong violence
•  frequent strong language (e.g. 'f***').
•   portrayals of sexual activity
•   strong verbal references to sex
•   sexual nudity
•   brief scenes of sexual violence or verbal references to sexual violence
•   discriminatory language or behaviour
•   drug taking

18:
Films rated 18 are for adults. No-one under 18 is allowed to see an 18 film at the cinema or buy / rent an 18 rated video. No 18 rated works are suitable for children.
18 works are for adults and can contain strong issues such as:

•   very strong violence
•   frequent strong language (e.g. 'f***') and / or very strong language (e.g. ‘c***’)
•   strong portrayals of sexual activity
•   scenes of sexual violence
•   strong horror
•   strong blood and gore
•   real sex (in some circumstances)
•   discriminatory language and behaviour

 R18:
The R18 category is a special and legally-restricted classification primarily for explicit works of consenting sex or strong fetish material involving adults. Films may only be shown to adults in specially licensed cinemas, and video works may be supplied to adults only in licensed sex shops. R18 videos may not be supplied by mail order.






In my opinion the target audience for our movie thriller should be rated for people not under 18.
In our movie there will scene with strong violence, strong horror, and a lot of blood.
From the BBFC (British Board of Film Classification) I've seen that only the rating of 18 matches the description for our thriller movie. So I assume that is the best rating we could have.




More info: http://www.bbfc.co.uk/