Comparison between the cut UK VHS by CIC (BBFC 18) and the uncut NL DVD by Paramount (NL 16).

All in all 19 seconds are missing in a total of 3 scenes.

The Friday the 13th series has been released on VHS partially uncut in Great Britain. However, the parts 3,4,5,7 and 8 were cut versions of the the original movies. In the fourth part, which is discussed here, 3 scenes were cut although the gory scenes were almost completely left unedited. The UK DVD is uncut.

72 min
Jason hits Rob more often with the garden fork. There are also several cuts to the screaming Trish.
10 sec

78 min
Aerial shot of the lightly clad Trish lying on the ground after falling out of the window.
4 sec

81 min
Jason's head is sliding down the machete. Trish looks terrified.
5 sec