Here you go. Be sure to select best answer.
PCPartPicker part list:
http://uk.pcpartpicker.com/p/9yWFCJ
Price breakdown by merchant: http://uk.pcpartpicker.com/p/9yWFCJ/by_merchant/
CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor (£165.90 @ Amazon UK)
Motherboard: MSI Z87-G45 Gaming ATX LGA1150 Motherboard (£80.24 @ Scan.co.uk)
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600 Memory (£68.65 @ Amazon UK)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (£38.98 @ CCL Computers)
Video Card: MSI GeForce GTX 760 2GB TWIN FROZR Video Card (£143.00 @ Ebuyer)
Case: Corsair 300R ATX Mid Tower Case (£51.97 @ Scan.co.uk)
Power Supply: Antec HCG M 750W 80+ Bronze Certified Semi-Modular ATX Power Supply (£98.68 @ More Computers)
Optical Drive: Lite-On iHAS124-14 DVD/CD Writer (£11.21 @ Aria PC)
Total: £658.63
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-09-27 16:07 BST+0100