Dering Hall which launched two months ago (deringhall.com) caters to the high-end furnishings and design market. The site is the brainchild of Peter Sallick (CEO of Waterworks) and designer Steven Gambrel.
The idea is to connect users with established architects, interior designers and artisans. I like this site as it gives access to really unusual high-quality products and some great deals to boot!