Warp Films, an independent UK film and TV company established in 1999, is considered the best distributor for a psychological horror film due to its focus on niche audiences. Unlike larger studios, Warp Films operates with smaller budgets, as exemplified by their productions 'Four Lions' and 'This Is England,' which were both made for low amounts. The company has a successful track record in producing films and series that attract specific demographics, making it a suitable choice for targeted content.