A cheaper alternative that will offer you similar performance to what's been recommended above:
PCPartPicker part list:
https://uk.pcpartpicker.com/list/V8zp4q
Price breakdown by merchant: https://uk.pcpartpicker.com/list/V8zp4q/by_merchant/
CPU: Intel - Core i5-9600K 3.7 GHz 6-Core Processor (£246.73 @ Aria PC)
CPU Cooler: Noctua - NH-D14 64.95 CFM CPU Cooler (£66.92 @ Ebuyer)
Motherboard: Gigabyte - Z390 GAMING X ATX LGA1151 Motherboard (£125.98 @ Box Limited)
Memory: Team - Vulcan 16 GB (2 x 8 GB) DDR4-3000 Memory (£113.08 @ CCL Computers)
Storage: Crucial - MX500 500 GB 2.5" Solid State Drive (£66.78 @ Aria PC)
Storage: Seagate - Barracuda 2 TB 3.5" 7200RPM Internal Hard Drive (£54.79 @ Aria PC)
Video Card: Asus - GeForce GTX 1070 Ti 8 GB CERBERUS Video Card (£379.97 @ Ebuyer)
Case: Corsair - 200R ATX Mid Tower Case (£57.98 @ PC World Business)
Power Supply: Corsair - RMx (2018) 650 W 80+ Gold Certified Fully-Modular ATX Power Supply (£87.98 @ CCL Computers)
Optical Drive: Asus - DRW-24D5MT DVD/CD Writer (£13.00 @ AWD-IT)
Wireless Network Adapter: TP-Link - TL-WN881ND PCI-Express x1 802.11b/g/n Wi-Fi Adapter (£11.99 @ Amazon UK)
Total: £1225.20
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-12-17 12:55 GMT+0000