PCPartPicker part list:
http://uk.pcpartpicker.com/p/FPLDQ7
Price breakdown by merchant: http://uk.pcpartpicker.com/p/FPLDQ7/by_merchant/
CPU: Intel Core i3-4340 3.6GHz Dual-Core Processor (£100.00 @ Aria PC)
Motherboard: Gigabyte GA-B85M-D2V Micro ATX LGA1150 Motherboard (£40.85 @ Ebuyer)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory (£59.98 @ Amazon UK)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive (£35.94 @ Aria PC)
Video Card: MSI GeForce GTX 760 2GB TWIN FROZR Video Card (£168.91 @ Scan.co.uk)
Case: Zalman ZM-T4 MicroATX Mini Tower Case (£21.23 @ CCL Computers)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply (£46.93 @ CCL Computers)
Total: £473.84