That's way overkill dude.
PCPartPicker part list: http://uk.pcpartpicker.com/p/NgQ3YJ
Price breakdown by merchant: http://uk.pcpartpicker.com/p/NgQ3YJ/by_merchant/
CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor (£178.29 @ Amazon UK)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler (£24.98 @ Novatech)
Motherboard: MSI Z97-GAMING 5 ATX LGA1150 Motherboard (£109.99 @ Amazon UK)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory (£38.96 @ CCL Computers)
Storage: Samsung 850 EVO-Series 120GB 2.5" Solid State Drive (£49.95 @ Amazon UK)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (£39.98 @ Scan.co.uk)
Video Card: MSI Radeon R9 390 8GB Video Card (£264.97 @ Amazon UK)
Case: NZXT H440 (Black/Red) ATX Mid Tower Case (£88.98 @ Novatech)
Power Supply: EVGA SuperNOVA NEX 650W 80+ Gold Certified Fully-Modular ATX Power Supply (£63.31 @ Amazon UK)
Total: £859.41
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-10-02 21:54 BST+0100