When this film is gruesome, it's very very gruesome. And when it's brilliant, it's very very brilliant. And that is most of the time.
This film is very British in its grittiness. Not all that is on the screen is nice to watch, and not just when you have people coming up through toilets and the like, but you find yourself watching it none the less. This film is never boring, there is always something to hold your interest, if you want it to be held.
I have to make mention of Hugh O'Conor. I think he is a very good actor. He pulls off the age range he has to show, from the school boy who isn't allowed to take books about poison out of the library, to a guy well into his twenties. He also displays depth to the character. After watching this film I am a huge fan of his.
And a word of warning. You might like to make your own cups of tea after watching this film.