Not bad for the price but that graphics card isn't much for playing games.
PCPartPicker part list:
http://uk.pcpartpicker.com/p/1BmVQ
Price breakdown by merchant: http://uk.pcpartpicker.com/p/1BmVQ/by_merchant/
Benchmarks: http://uk.pcpartpicker.com/p/1BmVQ/benchmarks/
CPU: AMD FX-6300 3.5GHz 6-Core Processor (£86.95 @ Amazon UK)
Motherboard: Asus M5A97 R2.0 ATX AM3+ Motherboard (£59.00 @ Amazon UK)
Memory: Corsair 8GB (2 x 4GB) DDR3-1600 Memory (£57.36 @ Amazon UK)
Storage: Western Digital Caviar Blue 500GB 3.5" 7200RPM Internal Hard Drive (£58.31 @ Amazon UK)
Video Card: Sapphire Radeon HD 7790 1GB Video Card
Case: Cooler Master Elite 430 ATX Mid Tower Case (£39.46 @ Amazon UK)
Power Supply: Corsair Builder 430W 80 PLUS Certified ATX12V Power Supply (£42.50 @ Amazon UK)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer (£13.15 @ Amazon UK)
Total: £356.73
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-09-08 15:57 BST+0100)
Cheaper and way better than what you linked