CPU:  AMD FX8-8350 Black Edition Vishera 8 Core AM3+ 4.0GHz 16MB 125W - http://www.shop.bt.com/products/amd-fx8-8350-black-edition-vishera-8-core-am3--4-0ghz-16mb-125w-8BXF.html?refs=56930000 - £149.98

CPU cooler: QuietPC Noctua NH-U9B SE2 Dual Fan Quiet CPU Cooler - http://www.shop.bt.com/products/quietpc-noctua-nh-u9b-se2-dual-fan-quiet-cpu-cooler-71P7.html?refs=4294946790 - £49.03

Mobo: Asus M5A99X EVO R2.0 AM3+ AMD 990X SB950 DDR3 ATX - http://www.shop.bt.com/products/asus-m5a99x-evo-r2-0-am3--amd-990x-sb950-ddr3-atx-87SF.html?refs=473460000-50626 - £89.98

ram: Kingston 16GB (2 x 8GB) HyperX Blu Black DDR3 1600MHz DIMM XMP CL10 - http://www.shop.bt.com/products/kingston-16gb--2-x-8gb--hyperx-blu-black-ddr3-1600mhz-dimm-xmp-cl10-8DLT.html?refs=55260000 - £119.98

HDD:  Seagate 1TB Barracuda SATA 6Gb/s 64MB 7200RPM Hard Drive - http://www.shop.bt.com/products/seagate-1tb-barracuda-sata-6gb-s-64mb-7200rpm-hard-drive-7XD5.html - £44.98 

GPU: http://www.shop.bt.com/products/sapphire-technology-amd-radeon-r7-240-730mhz-1gb-gddr5-pci-e-3-0-hdmi-90PJ.html?refs=469930000-57870000 - http://www.shop.bt.com/products/sapphire-technology-amd-radeon-r7-240-730mhz-1gb-gddr5-pci-e-3-0-hdmi-90PJ.html?refs=469930000-57870000 - £48.87 

PSU: Corsair 600W Builder Series CX Series CX 80+ Bronze ATX Power Supply - http://www.shop.bt.com/products/corsair-600w-builder-series-cx-series-cx-80--bronze-atx-power-supply-8CDC.html?refs=50113 - £49.16

CASE: CoolerMaster Elite 431 Plus - USB 3.0, ATX Case - http://www.shop.bt.com/products/coolermaster-elite-431-plus---usb-3-0--atx-case-8RCW.html - £47.37

BR-drive: Asus 12x BD-R Reader 16x DVDRW 48x CD-R Black Retail Drive - http://www.shop.bt.com/products/asus-12x-bd-r-reader-16x-dvdrw-48x-cd-r-black-retail-drive-935G.html?refs=4294952706 - £48.03

wifi card: TP-Link TL-WN881ND 300Mbps Wireless N PCI Express Adapter - http://www.amazon.co.uk/TP-Link-TL-WN881ND-300Mbps-Wireless-Express/dp/B006BSPTAQ/ref=sr_1_2?ie=UTF8&qid=1392672746&sr=8-2&keywords=wifi+card - 12.87

total: 660.25

I would look around at these parts on other sites see if you can find them cheaper. If you go by this make sure you get the CPU cooler i chose the 8350 kicks out a lot of heat but is great for rendering.