www.rightstuf.com

Great place to buy DVDs and such for a pretty decent discount. They have specials every now and then. Recently they had a 40% off all DVDs from Geneon, which I used to buy the entire set of Gankutsuou: The Count of Monte Cristo. They ship internationally, so it should be just as easy to get something in the UK as it would in my middle-of-nowhere country Bermuda.