howard1259 :
P.S i'm looking to spend around £130 altogether
That's already quite over your initial budget,can you really spend that?
Does it have to be from amazon?
You could look at the next parts,used the pcpartpicker set on uk,
PCPartPicker part list:
http://uk.pcpartpicker.com/p/24Xxv
Price breakdown by merchant: http://uk.pcpartpicker.com/p/24Xxv/by_merchant/
Benchmarks: http://uk.pcpartpicker.com/p/24Xxv/benchmarks/
Video Card: MSI Radeon HD 7850 2GB Video Card (£124.49 @ Ebuyer)
Power Supply: XFX ProSeries 450W 80+ Bronze Certified ATX Power Supply (£34.99 @ Aria PC)
Total: £159.48
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-11-19 20:12 GMT+0000)
The cheapest stores aren't amazon here.
If you can spend a bit more and it doesn't have to be amazon you could get the corsair builder 500watt from there and the next card which would be even better,
http://www.aria.co.uk/SuperSpecials/Other+products/XFX+DD+Radeon+HD+7870+GHz+Edition+%28Tahiti+LE%29+2GB+GDDR5+Graphics+Card+%5BFX-787A-CNAC%5D+%2B+2+FREE+GAMES%21+?productId=55140&source=skinflint
That's for about the same price as the hd 7850 you linked and a better gpu.