here you go
http://uk.pcpartpicker.com/p/1i0ie
this is really good for 600 dollar.
it features a 8 core prossecor and the nvidia gtx 760.
the gtx 760 is very good for 1080p gaming.
i didnt include a cpu cooler cuz i dont know if u are gonna overlock
if u are gonna overclock pick up a cooler master hyper 212 for 25 dollar.
i went over budget but its only 15 pounds.
i really recomend this build.
oh yeah and if u wanna add a ssd go ahead wiht a samsung 840 series 120gb