Amazing price for a 4670, probably the lowest ever. The photo was recently changed to show a Powercolor card, although the last batch were Palits so be prepared for either if you order one (but I suspect they'll be Powercolors). Both are great cards and don't need any external power so should be fine with a 350W PSU on most systems. The Powercolor is a single height card by the looks of it so there shouldn't be any problems in small cases either (the Palit is double height).
Full review of the Powercolor here:http://www.techpowerup.com/reviews/Powercolor/HD_4670/1.html
Edit 5/3/09: Up to from £54.04 to £55.19 now but still a great deal - plus 3% cashback through Quidco!
Edit 6/05/09: Up to £57.49 now. Still the cheapest 4670 around though.
Edit: 9/05/09: Up to £59.79. Inflation gone mad. Still the cheapest 4670 out there, but obviously not the bargain it was at £54.