That's a really thought out build thanks! For reference I will share what I was initially thinking (all prices are from Amazon):
CPU: Intel Core i5 7500 - £169.99
Heatsink: Cooler Master Hyper 212 Evo Air CPU Cooler "RR-212E-16PK-R1, 4 x Heatpipe, 1x 120mm PWM Fan, Intel/AMD" - £28.52
Motherboard: MSI Computer Gaming Intel B150 LGA 1151 DDR4 USB 3.1 Micro ATX Motherboard (B150M MORTAR ARCTIC) - £101.02
Memory: Ballistix Sport LT 8GB Kit (4GBx2) DDR4 2400 MT/s (PC4-19200) SR x8 DIMM 288-Pin - BLS2C4G4D240FSC (White) - £69.59
Storage: WD Blue 1TB Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - £42.98
GPU: Gigabyte Nvidia GTX 1080 GDDR5 8GB OC WF3 PCI-E - £494.97
Case: NZXT CA-S340W-W2 High Performance Gaming Case with VR Support - White - £88.88
PSU: EVGA Supernova 650 W G1 Gold 80 Plus Modular Power Supply Unit - £77.94
Monitor: ASUS VC239H Monitor, FHD (1920x1080), IPS, Frameless, Flicker Free, Low Light, TUV Certified, 23 inch - Black - £136.24
Total: £1,210.13
Also I was told that when it comes to gaming specifically Intel CPUs will perform better than their Ryzen counterparts so could you just explain your choice for my benefit. Furthermore is it sensible to pay £200 for the monitor you chose when I can buy a 1440p monitor at 60Hz for the same price (Asus VX24AH 24 inch Frameless IPS 5 ms Console Gaming Monitor with Dual HDMI ports, 2560 x 1440, 300 cd/m2)
I am going for a black and white theme by the way