I recommend it. British movie.
You might be familiar with it the character of the movie, some of the scenarios. Might even remind you of a Gasper Noe movie but... despite all of those things I feel this is sort of one of the gems out of a small genre. The characters are no-bodies in real life, mostly; very believable. Yet the performances are excellent; so real you almost feel uninterested because you've seen enough of the same shit in your own life. You might feel like you recognize a few scenes but...
They did it right with this movie. There are a lot of flops out there trying to do something similar.