That article is a great illustration of why I hate all these lists. I have no doubt that the list reflects the author's taste very accurately. A lot of those films, though, you couldn't pay me to sit through.
I do recommend Peeping Tom, although I'd call it a psychological suspense film, not horror. The lead actor, who was German, gave an amazing performance. The movie destroyed the career of the director because it was so completely pilloried in the British press of the period.
There are some more imaginative lists out there if you google British Folk Horror films. They still miss out on some excellent films because they are LISTS--the "list" is the antithesis of the whole concept and activity of cultivating aesthetic taste. But I must descend the soap box before I am booted off this forum for good.
cheers, G.