A very brief but graphic sex scene, where the man's scrotum can be seen for a few frames. Suggestive movements and moaning.
It is strongly implied that a man is masturbating. We see him from behind. No genitals shown, but his arm movements are clearly visible.
Three or four scenes with the main characters partying with hookers. We see their augmented breasts, off which the character's sometimes snort coke. Lap-dances are shown and it is obvious that sexual acts are being performed.
Violence & Gore
Severe
Several somewhat brutal fights, with people either armed or unarmed. More violent than either of the film's two predecessors. Scenes include a young man getting a part of his hand shattered, someone getting stabbed in the face and thrown from the railing of the upper floor of a cell block, a thug is crucified (quite literally) next to his naked friend, who is also nailed to a makeshift wooden cross; and there's a few instances where someone is abruptly knocked out.
Profanity
Severe
Fairly frequent use of the C word, almost constant F words and various British swears. Overall an extremely profane film.
Alcohol, Drugs & Smoking
Severe
Casual drinking in bars, and several scenes that show drug abuse. Key characters, and especially the main character, are shown becoming aggressive and irrational as a result of substance abuse. Drugs are often discussed, and doing related business is a major plot point.