Comparison between the cut BBFC 18 VHS by Virgin and the uncut BBFC 18 DVD by Arrow Video.

48 seconds are missing within 4 scenes.

The British VHS is based upon the shorter international export version, but some additional cuts were made due to the violence in some scenes. The British DVD releases are completely uncut and equal to the Italian original version, which has 12 more minutes of plot scenes.

19 Min
The killer is tying up the arms of the woman with a piece of rope.
14 sec

27 Min
Only the uncut version shows Stefano with his mouth wide open, so we see the tip of the knife reaching all the way up into his mouth cavity, after the killer has thrust the knife into Stefano's neck. In between of that, there's a close-up of Betty's eye with needles strapped under it. The killer pulls the knife out of Stefano's neck.
7 sec

27 Min
The killer stabs Stefano, who's lying on the floor, several times. Again some cuts in between to Betty, who has to watch it helplessly.
13 sec

46 Min
After he has stabbed Giulia, the killer reaches for the bloody scissors lying on the floor and uses them to get the necklace, which has fallen into her mouth, out of it.
14 sec