Certificate of my film

My film would hold a 15 certificate as it has scenes of drug use. However, my film will not show too much drug use as the plot of the film is merely not about drugs, but about the relationship between a father and his son. On the other hand, my film contains strong uses of language quite frequently and may upset some viewers. The strong language is used to allow anger to flow frequently. There are scenes of fighting, which some viewers may find offensive in different ways to others, but as it is a broad certificate, a 15 would be suittable.