My collecting of Aliens magazine has leapt ahead quite a bit - I now have all of Vol. 1, #1-15 and #20 of Vol. 2, and all three issues of the Alien 3 spin-off mag.
I know I said I wasn't all that interested in Vol. 1, but I found the whole lot being sold in one go for under fifteen quid so I couldn't really say no. Also I am really curious about Vol. 1 #17, the official Dark Horse one, and I couldn't see that for sale separately anywhere.