so, i've decided it's about time to get an upgrade.

i've had my current pc for roughly 4 years, so it's getting on a bit, and it's not really doing so well on modern games.

so instead of upgrading that (you can't polish a turd), i thought i'd go for it and get a new pc. that's why i want help.

What is this computer going to be used for?
i'll be using it for playing high-end games and occasional rendering possibly (that isn't a priority however) and everyday use.
What is your budget?
900-1000 GBP
Where do you live? If in the US, do you have a nearby Microcenter?
i live in the UK.
What is included in the budget?
case and OS. the case doesn't need to be anything incredible, just something well-made and that'll do the job.
Will you be overclocking?
no.
Will you be reusing any parts?
monitor, keyboard and mouse.
What OS do you want?
Windows 8
Any specific case preferences?
no preferences.
Any other special features that you want in the build?
SSD and wifi.