http://uk.pcpartpicker.com/p/2rNwi
I just built that, its silent and fast. It costs around 500 at the moment, the mobo is cheaper at currys but partpicker are an amazing website for price comparison.
Monitor wise: http://www.amazon.co.uk/gp/product/B00BLZJL30/?tag=ho01f-21 83 quid for a very sweet monitor.
Sign up for a free months of amazon prime as well. I would literally get everything from amazon apart from the mobo, I would get that from currys and you can go and collect it from any currys or pc world.
Under 600 and you will have a really good PC. My lowest windows rating is 6.7, which is for graphics. The cpu has graphics and no need for a dedicated graphics card. Im not a gamer at all, I just do a lot of browsing and watching movies.
To build this it took like 30 mins, and it was a lot of fun.