Thanks for the help chaps.
In the end I went for
Coolermaster Silent Pro 700W Modular PSU - Single 12V Rail with 50A - £79.02 @ebuyer; opted for this in the end if I decide to get more power hungry components in the distant future.
Intel Sandybridge i5-2500K Unlocked Core i5 Quad-Core Processor (3.30GHz, 6MB Cache, Socket 1155) - £160.50 @amazon
XFX ATI Radeon 6950 HD 2GB PCI-Express HDMI - £209.98 @dabs Seems pretty good for what am after, just above my price point which is how it always ends up being seems there may be new graphics cards coming soon, but eh thats always the way I assume.
Gigabyte S1155 Intel Z68 DDR3 ATX - £74.98 @dabs
8GB (2 x 4GB) HyperX Blu DDR3 1600MHz DIMM 240-pin CL9 - £33.99 @dabsTotal = 479.45
dabs 2% cashback, just missed out on there £25 off on orders over £200
Not sure what to do about storage. I will probs opt for a solidstate drive in the near future for important storage and in the future if I get strapped for bytes I may opt for either a blu ray burner or a TB hard disk drive, see what happens!
Now you can all help me install it all when they arrive