Thanks!
OK, so in fact the pair I ordered seems to be UK 42 regular length. That is, I recommend taking one size larger than your usual size, and on top of that you should not be too high, as it is regular rather than long. Apart from that, it is an excellent item which I do recommend. Its great quality, soft and really warm, and just about right thickness, not too thick and definitely not thin. Many thanks to the seller. Its been one of my best buys here on Ali.