BBFC Classification for horror movie

My group and I decided to classify our movie as 15. We chose 15 because of various reasons including, our film having explicit scenes which would be inappropriate for younger viewers. The film will also be including strong elements of violence which may cause discomfort for younger viewers and also the use of harsh weapons. This will not be appropriate for younger viewers as they may copy the characters behaviour and cause trouble. Our movie is suitable for those 15 and above that is why we have classified it as a 15 movie.