I was thinking this - http://www.amazon.co.uk/gp/product/B00C9UTMOO/ref=noref?ie=UTF8&psc=1&s=computers
It is cheap and has pretty good specs for the price. An i5 with the same GPU is £60 more expensive.
I have heard in the laptop world that the difference between an i5 and i3 is not that much...