The differences between the UK and US releases were covered in some detail some pages back, including some links to other sites where comparisons had been made. I don't intend going over everything again since it's easy enough for people to read through the earlier posts.
However, people considering obtaining the UK release should be aware that in addition to being a 1080i transfer, it was apparently transferred from a PAL master and consequently suffers from the 4% PAL speedup, hence the shorter running time. Just for good measure, the UK release only has a lossy soundtrack and, yes, the image quality is execrable.
Anyone wanting a Steelbook of this title, who isn't averse to foreign text, then the German release is a good alternative. OOP but it can still be obtained at a reasonable price on the secondary market. The transfer is also far superior, in every respect, to the UK one.