I would be wary of that SSD. Also, you might want to add about a 100 watts to the PSU. 550 seems to be cutting it close imo.
PCPartPicker part list:
https://uk.pcpartpicker.com/list/qf8tNN
Price breakdown by merchant: https://uk.pcpartpicker.com/list/qf8tNN/by_merchant/
CPU: Intel Core i5-7500 3.4GHz Quad-Core Processor (£193.99 @ Aria PC)
Motherboard: Gigabyte GA-B250M-D2V Micro ATX LGA1151 Motherboard (£64.90 @ CCL Computers)
Memory: Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-2400 Memory (£73.13 @ Misco UK)
Storage: Kingston HyperX Fury 240GB 2.5" Solid State Drive (£65.97 @ BT Shop)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (£44.95 @ Amazon UK)
Video Card: XFX Radeon RX 480 8GB GTR Video Card (£259.99 @ Amazon UK)
Case: Phanteks ECLIPSE P400 ATX Mid Tower Case (£55.56 @ Aria PC)
Power Supply: Antec TruePower Classic 750W 80+ Gold Certified ATX Power Supply (£73.48 @ BT Shop)
Operating System: Microsoft Windows 10 Home OEM 64-bit
Wireless Network Adapter: TP-Link TL-WDN4800 PCI-Express x1 802.11a/b/g/n Wi-Fi Adapter (£25.99 @ Amazon UK)
Keyboard: Cooler Master MasterKeys Pro S Wired Standard Keyboard (£109.97 @ Ebuyer)
Total: £967.93
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-01-15 18:09 GMT+0000
Added 200 watts by accident... oops