Horror movie age rating info

Horror movie will probably have blood & gore and scenes of a sexual nature. If we choose to do vampires they're percieved as sexual creatures through neck biting and the sucking of blood can be sexual and, or violent. Vampires may provide sexual arousal or stimulation for the audience. Also if not a vampire film it's a horror and will still be scary with scenes of violence and not suitable for young audiences so it should be a 18 rather than a 15 as we can't predict right now how scary it will turn out.