About 1/4 of the way down the "Today Only" Page. Seems a cracking deal for 12GB of RAM. If you're wanting a cheap way to build a half way decent ESX server, you can get 24GB of RAM in a triple channel mobo for less than £260!
Today Only lasts all weekend.
Specs on this link:http://www.scan.co.uk/products/12gb-(3x4gb)-corsair-vengeance-ddr3-pc3-12800-(1600)-non-ecc-unbuffered-cas-9-9-9-24-xmp-150v
CORSAIR high performance Vengeance memory module 12GB (3x4GB) 1600MHz 9-9-9-24, CL9, 1.5V for motherboards using Intel triple channel processors. Vengeance memory modules provide users with outstanding memory performance and stability. Each module is built using carefully selected DRAM to allow excellent overclocking performance, and has a limited lifetime warranty.
Free delivery if you're a Hexus or AVForums member (and contributed a few posts...).