It's that time again. Input on a new gaming machine anyone?

[Adam]

Now looking at This barebones http://www.novatech.co.uk/products/bareb...74770.html

with this graphics card http://www.novatech.co.uk/products/compo...1-10p.html

That's actually a pretty good bundle. Intel Core i7-4770k with 16GB of RAM and a GTX 760. (760 performance is around a 670)
You can also overclock the the i7 as the processor is the Unlocked K version. This should last you at least 3-4 years even without the processor overclocked.
Unfortunately, I can't recommend you any other suggestion except the one you already posted. Since you are in UK it is difficult to find compatible vendors that ship overseas without overcharging on the VAT/Customs Tax from the U.S/Canada.