Have been shopping around for a gaming PC and this struck me as the cheapest way to get a GTX1080. I had mine delivered yesterday and it runs everything I've thrown at it at absolutely max settings. I thought the processor may bottleneck the GPU but it isn't showing signs of doing so at all. Unigine benchmark came out at 4681 which is very high from what I can tell.
I tried configuring a similar PC with only a GTX 1070 but it was still coming out at £1050 so this appears to be a decent deal. Any questions about the PC and I'll try to answer them in the comments. Details on the site are a bit sparse