This is a comparison between the British BBFC 18 version and the uncut version (US-DVD).
There is a total of 3 cuts adding up to 13.64 seconds. (those are exactly 341 frames).
Note: The length of the cuts are in both frames and seconds. In PAL one seconds of film contains 25 frames.
Brawl in the bar (0:13:06)
Nico has just hit his elbow in the face of the guy with the blue shirt (without sleeves) twice. The British version does not show him hitting his elbow twice in the face of the other hooligan who has been talking pretty bad about Lucia. Blood is running from his nose and his face is wreathing in pain.
140 frames are missing, that equals 5.6 seconds.
Nico finds Lucia and her friend in the hotel room (0:13:56)
Before Nico kicks open the door to the room in which he finds Lucia and her friend the British version does not show her lighting a crack-pipe.
124 frames are missing, that equals 4.96 seconds.
Nico takes care of head-bad-guy Zagon (1:29:00)
In the British version Nico "only" breaks Zagon's neck. The following can be seen in the uncut version:
After Nico has hit Zagon in the face powerfully a close up of Zagon's face is missing in the British version. We see his smashed and bleeding nose very clearly. After that, Nico uses his right hand to grab Zagon's right wrist and breaks the arm down in the opposite direction of the elbow. Zagon screams in pain. Here, the British version joins in, again, and shows Nico breaking Zagon's neck.
77 frames are missing, that equals 3.08 seconds.