PCPartPicker part list:
http://uk.pcpartpicker.com/p/2OdZo
Price breakdown by merchant: http://uk.pcpartpicker.com/p/2OdZo/by_merchant/
Benchmarks: http://uk.pcpartpicker.com/p/2OdZo/benchmarks/
CPU: AMD A8-6500 3.5GHz Quad-Core Processor (£73.98 @ Amazon UK)
Motherboard: Gigabyte GA-F2A88XM-HD3 Micro ATX FM2+ Motherboard (£47.85 @ Amazon UK)
Memory: Kingston Value 4GB (2 x 2GB) DDR3-1333 Memory (£24.00 @ Amazon UK)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (£38.97 @ Amazon UK)
Case: Fractal Design Arc Mini MicroATX Mini Tower Case (£50.99 @ Amazon UK)
Power Supply: Corsair CX 500W 80+ Bronze Certified Semi-Modular ATX Power Supply (£46.24 @ Amazon UK)
Operating System: Microsoft Windows 8.1 - OEM (64-bit) (£77.34 @ Amazon UK)
Total: £359.37
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-02-06 09:56 GMT+0000)
Features a good power supply and motherboard to allow you to upgrade in the future to new APU's or get a decent discrete GPU