Idea for film. Number 1

A horror movie would be a good idea, in my opinion, for the project. Horror films (excluding sci-fi horrors) are usually quite small budget movies e.g. Dog Soldier. Although creating the right atmosphere would be hard, there are some areas in Ashtead and Leatherhead that would serve as an excellent murder scene location. It would probably have to be a slasher film rather than a monster or new age horror film. (Saw, Hostel etc.) This is because, unless you create an unseen monster/ alien, there would be difficulty in how to create the monster. With new age horror I personally wouldnt want to recreate any torture devices, even if unreal and harmless. It would present a large ethical dilemma for me. 
One example of a cheap and effective (although monster) horror film.