I watched this at the cinema when it was released and I honestly think it's one of my top 10 favourite films. Felt really fresh at the time when the whole "slasher" type horror seemed to be making a comeback and horror in general wasn't as popular.
Wonder if it's based on the US or the German encode, as the latter has less compression artefacts and a slightly higher gamma.
Edit: after seeing the vestron label on the UK amaray I'm guessing it's the US encode.
The first two are some of my favourites, love Divoff in these 3 is terrible, not even in a "so bad it's good" way, but 4 is pretty fun as a bad film. And there's some great practical effects in these.