The plot is that a drug squad in London is seemingly as corrupt as the people they are trying to police. Michael (Peter Ferdinando) is the Detective Sergeant and he is the central figure with a taste for coke (the snorting variety) but essentially a good heart that is obscured by his own greed. 'The book' is for other cops in this film where the line between the law and law breakers is very opaque indeed.
Then their cozy World gets turned upside down when two Albanian low life's turn up and start to make things rather uncomfortable - that is when the line between good and bad goes from blurred to non existent.
Now there are some big names here; Stephen Graham and Neil Maskell both giving convincing performances as ever. The acting is all better than good; the direction and the production are superior too. Some of the scenes are very stylishly done, but the visceral depictions of violence (both on and off screen) makes sure that this does not become a 'classy crime flick'. The ending will leave some a bit annoyed but this is in most places a down to earth and realistically imagined film - hence my rating. Not one for the squeamish but one that shows a good Brit crime film can still be made.