I've been after a replacement for my faulty 7900GS this week and have been shopping around for the best deal. The 8800GTS series have been a tempting option but the majority are £200+ with shipping on top and that is a little more than I wanted to spend.
However, Ebuyer have a limited number of the Point Of View brand available for £174.95. That price in itself is pretty tasty, but if you buy using Google Checkout and Quidco you'll save a further £10.17! In addition to that, by selecting the super-saver delivery option, you get it sent to you free!
£164.78 for an 8800GTS 320mb with free delivery - not a bad deal!