Apple have dropped the prices of the previous generation Sandy Bridge refurb laptops - the base 11.6" MacBook Air model is now £639 or pay £719 for the 4GB ram/128GB SSD model.
Originally released July 2011
11.6-inch (diagonal) high-resolution LED-backlit glossy widescreen display
1.6 GHz dual-core Intel Core i5
64GB flash storage
Thunderbolt port with support for up to 2560-by-1600 resolution
Intel HD Graphics 3000