Do take a look at the blog on Fringeworks’ website. They have several anthologies open for submission.
The Last Diner (closing date 30th June) – “As the title suggests, we are looking for gruesome stories set in food establishments. Cafes, Diners, Motels, Restaurants, Take-Aways, Tea Rooms, wherever you might eat in public. The Last Diner is specifically geared to attracting horror stories between 3,000 and 6,000 words in length.”
NeaDNAthal (closing date 20th July) – “As the title suggests, we are looking for stories which involve the reappearance of Neanderthal Man in the modern age. A sort of Jurassic Park for cavemen. NeaDNAthal is specifically geared to attracting Science Fiction (SF) stories between 2,500 and 6,000 words in length.
Stories can be contemporary, set in the recent past (as far back as the Victorian age), or set any time in the future. They should revolve around the return of Neanderthal man, possibly by DNA recreation, and should take account of the impact such a reappearance may have, either upon the neanderthals, society, or both”
Cadavers (Closing date 19th August) “As the title suggests, we are looking for stories about the dead. Not the walking dead. Not the undead. Dead bodies. Cadavers is specifically geared to attracting stories between 3,000 and 6,000 words in length.
Stories should be set in the real world, and must revolve around the adventures of bodies post-mortem. Think Johnny and the Dead, Weekend at Bernies, the Bodysnatchers. Stories can be humorous, horrific, Fortean, bizarre or mysterious.”
http://www.fringeworks.co.uk/blog/ for full details