If anyone wants to look at my full parts list and give me any more pointers have a look below:
PCPartPicker part list:
http://uk.pcpartpicker.com/p/mw6pkL
Price breakdown by merchant:
http://uk.pcpartpicker.com/p/mw6pkL/by_merchant/
CPU: AMD Athlon X4 860K 3.7GHz Quad-Core Processor (£52.00 @ Aria PC)
Motherboard: Gigabyte GA-F2A88XN-WIFI Mini ITX FM2+ Motherboard (£76.73 @ Amazon UK)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory (£42.73 @ Scan.co.uk)
Storage: Sandisk Solid State Drive 128GB 2.5" Solid State Drive (£39.74 @ Scan.co.uk)
Video Card: PowerColor Radeon R9 380 4GB PCS+ Video Card (£169.09 @ Ebuyer)
Case: Cooler Master N200 MicroATX Mid Tower Case (£28.55 @ Amazon UK)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply (£46.18 @ CCL Computers)
Total: £455.02
Prices include shipping, taxes, and discounts when available