That's a nice info.
Unfortunately, I read that the UK-blu-ray is the only edition where there's no censorship during the movie. It' not about cut or uncut, but the Jack Daniels bottle is censored, meaning, the label is replaced with a plain brown one - as far as I could see on the screenshots.
Well, at least the US-dvd and the austrian blu-ray are censored. So I guess they took the same master for the US-blu-ray as well.
So, together with your info about the UK-blu-ray having a poor picture quality, I'm at the point of buying no blu-ray edition of High Tension at all and stick to the dvd edition I already have - that one is untouched regarding the censorship and of course uncut.