Pew pew baby!
Completely forgot about this until now, sorry dude but better late than never!
http://uk.pcpartpicker.com/p/4PVsBm
i7 4770k - Fastest affordable CPU on the market, supports hyperthreading which is great for the shit you do at work.
Gigabyte mobo - Lots of features. Tons you'll probably never use but we're paying for the reliability here, not the features. Last thing you want is to be working on a massive project only for the thing to bluescreen or something.
16gb of RAM - You could go to 32gb later on, but I'd try this first and see how it goes, and like this you're still in budget. It's also a 2x8gb rather than a 4x4 kit so you'll always have a few slots spare should you want to upgrade later.
GTX980 - Fastest single-core GPU on the market. 'Nuff said. The only card that will trump this in the foreseeable future is the Titan X, which goes on sale tomorrow and will be between £800 and a grand. You could however go for an AMD R9 290x 8gb model which will come pretty damn close to this 980 performance wise and in some games even beat it. This will save you a hundred or so but you'll need a few fans in the case as that baby pumps out enough heat to power Bangkok. The 980 has very low power needs and heat dissipation. Great card.
600w PSU - Again, a bit of a premium here but this is for reliability purposes. This is assuming the 980 as GPU. If you go for the AMD option, go for a 750w. As this PC is now, this PSU is perfectly fine and this PSU will allow you to clock the nuts off both the CPU and GPU without breaking a sweat.
Case - This is just a placeholder but is a great case. Pick any ATX case you like which is in budget and a reputable brand.