Can Anyone Build Me a PC Under £700

When i was a noob i purchased a lenovo h420 or whatever it is, i never knew i would become a pc gamer and now i need a new pc... I will probably be able to sell this pc for about £150-200 and from working i will save up to £700 i could stretch if needs be but i would love to stay around that price range.

I am 100% certain all of you guys know what i need for a gaming pc so im going to let you go ahead and fire away suggestions, its your choice!

I would prefer if you could link em a pc from a website which builds it for me as I dont want to risk building the PC myself, anyway guys thanks for reading my thread and I'm looking forward to seeing some of your buids!