Freshtech Solutions Limited is by far the best retailer of PCs in the UK
I prefer to build myself but it prolly cost more than prebuilt from them
1 example
Freshtech Intel Core I5 7400 1tb 8gb 2133Mhz GTX 1060 3gb Dragon Computer Gaming PC Gigabyte H110M-S2H Motherboard 8gb DDR4 2133mhz Performance Ram Nvidia Geforce GTX 1060 3gb VR Ready Fractal Design 500w 80 Plus Certified 34a Power Supply 1tb Western Digital WD10EZEX 64mb Cache 7200rpm HDD
£636.00
https://www.amazon.co.uk/Freshtech-H...6834682&sr=8-1
I've dealt with these guys in he past they really know their stuff when it comes to Performance per Buck