This is what I have so far http://uk.pcpartpicker.com/p/cpDNWZ
Factor in £70 for a 256gb ssd as well as £40 for windows 7 bringing the total cost to just under £400. I also plan to overclock the processor as it apparently performs on par with most i5's when overclocked. I'm aiming for something that will play games such as CoD:AW , planetside 2 and GTA V(when released) in high settings. Any advice and comments on this would be much appreciated. BTW I am a complete noob and have never built a pc before.