Are you planning to use multiple graphics cards at some point (crossfire or SLI)? You might save a few pounds by going for a mATX rather than an ATX mobo. My first port of call is usually Asus mobos, but there are plenty of 'top tier' options at about your price range:
http://www.scan.co.uk/products/asus-...vi-d-dvi-i-atx
http://www.scan.co.uk/products/gigab...b-(vga)-dvi-d-
http://www.scan.co.uk/products/msi-z...dvi-d-hdmi-atx