I'm back from my trip, thanks for all the advice. If you have any questions i'd be glad to get back to you.
I did take a look at those overclockers bundles,
this one didn't seem too bad but i'm sure I'd be able to get the components cheaper elsewhere.
But at the moment Ailos's recommendations with Vancha's upgrades seem pretty swag and are probably what i'll end up getting. My parents said they will buy my current computer off me for an additional £300 so I should definitely be able to grab those extra upgrades to boot.