It's decent but you could do better for the money, if you build it yourself you could probably get a Phenom II X4 955 setup for not much more. Personally if i was in the market for a new comp today i wouldn't get anything less than a i5 750 and GTX 460 setup.

You could play around with some of the DinoPC builds if you're not comfortable building your own:

http://www.dinopc.com/shop/pc/pcs-ga...?idcategory=94

They offer a i5 760 setup for less than the one you selected at Overclockers UK, i would just switch the PSU to a 700W OCZ.

http://www.dinopc.com/shop/pc/config...?idproduct=763