Certificate for our film

The certificate rating for our film would be for a 15 because the film will include of strong language and violence which would be more suitable for 15 and above as the content would be more suitable for them, as the film will show a lot of intense scenes where it will involve a lot of strong language which wouldn't be appropriate for a younger audience. However from the research a lot of horror films were rated as PG-13, so involves having parental guidance with children aged 13 or younger, but we decided that if we put it as that, it would change the audience to a family, which them would lead it to tangent of which may not be as intriguing for the older audience, as this means that the level of content my be limited. Films including The conjuring (2013), paranormal activity 3, Mama and the The women in black (2012) all have a 15 rating to there films