Good graphics card for i5 build? £200 budget

From the choices on that site either that or the Asus model.

In general, though the cheapest 560Ti 448 core's which perform close to GTX570 run at about £210.
So that might still be an option.

Otherwise the Radeon 6950's are at about the same price ( 1GB models which will do fine, 2GB goes close to the 448 core), performing a bit better than normal 560Ti.

Also check www.scan.co.uk at least the selection was better.

get 6950 and unlock it to 6970
get the asus cooper cuii and oc u will get performance of a 580