The Exorcist 'is the most disturbing film'
The 1973 horror, which starred Ellen Burstyn, Max von Sydow and Lee J Cobb, told of a teenager who was possessed by a mysterious entity.
A Clockwork Orange claimed the second place, while Saw and The Texas Chainsaw Massacre also featured in the list, along with Requiem For A Dream, Irreversible, Se7en, Event Horizon, The Blair Witch Project and Antichrist.
The editor of LoveFilm Helen Cowley said: "As much as we wince and turn away from what's on screen, every film lover secretly loves a good horror flick.
"This list of disturbing films truly showcases the extreme lengths that filmmakers will go to in order to continually shock audiences, but it's great to also see some classics in there - which arguably changed the way horror films are crafted for today's audiences."