PCPartPicker part list:
http://uk.pcpartpicker.com/p/B36tHx
Price breakdown by merchant: http://uk.pcpartpicker.com/p/B36tHx/by_merchant/
CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor (£244.94 @ Aria PC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler (£25.34 @ Scan.co.uk)
Motherboard: Asus Z97-A ATX LGA1150 Motherboard (£110.39 @ Aria PC)
Memory: G.Skill Ripjaws Z Series 16GB (4 x 4GB) DDR3-2133 Memory (£117.72 @ Ebuyer)
Storage: Samsung 850 Pro Series 128GB 2.5" Solid State Drive (£83.94 @ Aria PC)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive (£35.94 @ Aria PC)
Case: Corsair 200R ATX Mid Tower Case (£43.48 @ Aria PC)
Power Supply: XFX 750W 80+ Bronze Certified ATX Power Supply (£64.75 @ CCL Computers)
Total: £726.50
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-01-02 18:02 GMT+0000
My personal approach.