Western Digital My Book Live 1TB £89.99 2TB £107.99
At Currys or PC World if you use the code STORE10 you get 10% off all storage over £90 with home delivery only. Delivery is free.
I'm not a massive fan of these companies, but I was looking for the My Book Live, so this was a good deal for me.
Remember it's STORE10, and not STORE90 which pops up when you look at the item.