Tartarus Press is a small British publisher that opened in the 1990s. They specialize in publishing literary supernatural/strange/horror fiction. They are best known for their limited edition hardbacks with distinctive cream covers. They also publish paper backs and eBooks. The press has won 5 World Fantasy Awards and 1 Stoker Award for horror.
They are currently open to submissions of short story collections and novels. This is what they have to say about subject matter and style:
We would like to receive literary strange/supernatural fiction. We are not interested in high fantasy, violent horror or young adult fiction. If you write within a traditional genre such as vampire or ghost fiction then please make sure that the more clichéd trappings of your genre are, at best, a very marginal part of your work.
They do not publish books aimed at children or young adults. They state that all payment rates will be negotiated, which is a little frustrating. It is much better when the publisher has the same policy in terms of rates with all of their authors.
They accept submissions via email or mail. To learn more visit their website here.