When I looked (on the same day as you posted the link) the Felt from
Wiggle was £950, which is substantially more (nearly 20% more) than £800. Hence my post.
My advice: Giant Defy 2, or last year's Defy 1. Or even, at Pauls Cycles dot com, Giant Defy Composite 3 (2013 model) for £799.99.