Anglo-Irish co-productions are always tricky when deciding whether or not they should be considered part of the British Horror Revival. You really need to see the film, or at least see the marketing, to judge. A case in point is Grabbers, premiering at Sundance.
Fangoria has a great interview with screenwriter Kevin Lehane in which he says, "I wanted to do something that was authentically Irish and a really cool Irish film that we’d never seen before." So that's enough for me, and I can take Grabbers off the list of forthcoming British horror films, even though it has some British money in it.
That said, I still desperately want to see this. It looks ace!