Just had a look.. For exactly the same price, bar a few quid, you can get this;
PowerColor Radeon 9800 128MB - Retail (GX-009-PC)
(
http://www.overclockers.co.uk/acatal...ics_cards.html)
Its a helluva lot better card than the 5700... can be clocked to pro speeds fairly easily as well, as the current batch has SamSung memory.
For example, in 3dmark2001.. A 5700.. compares with a 9600XT.. And would get you around 13k-14k on a AMD2200+... whereas, a 9800np wil get you near 16.5k.. big diff for £4
Buy now tho, they'l be sold out soon.