I've made a system up:
8GB (2x4GB) Corsair DDR3 Vengeance Pro Series Silver, PC3-17066 (2133), Non-ECC Unbuffered, CAS 11-11-11-27, XMP, 1.5V
1TB Seagate ST1000DX001 SSHD Hybrid HDD 3.5" SATA 6GB/s 64MB Cache <8ms OEM NCQ
MSI A78-G41 PC Mate AMD A78, S FM2+, DDR3, PCIe 3.0 (x16), 2 Way CrossFireX, D-Sub (VGA), DVI-D, HDMI, ATX
550W ThermalTake Smart Series, Hybrid Modular, 80 PLUS Bronze, ATX, PSU
AMD Athlon X4 860K Black Edition, FM2+, Kaveri, Quad Core Core, 3.7GHz, 95W, CPU, Retail
Total = 261.89 GBP
https://secure.scan.co.uk/web/basket
That gives a hybrid SSD and a decent GPU to game on 7950 + even a hybrid Modular PSU.
I'm 40 over... but this is miles better than what you had earlier + FM2+ is a live platform with upgrades.
You have to consider the value of 50 pounds difference... The experience will be way better for the price of two meals.