Certificate for my film

Having research the guidelines about film classifications, I believe that my film would be most appropiate for the 15 certificate. As my film is a psychological thriller and therefore leans towards the more horrific and terrifying categories, I believe that as a whole the 15 certificate is necessary as there isn't alot of strong language used out of context. Mostly strong language, such as the word 'fuck' will be used in context and not at just random stages. The film will endure some strong violence in scenes but this will not be on the verge of inflicting pain or injury and therefore allows it to fall in the 15 certificate category.