The CPU:
https://www.amazon.co.uk/AMD-Ryzen-1400-Desktop-CPU/dp/B06XKWT8J4/ref=sr_1_1?ie=UTF8&qid=1508324170&sr=8-1&keywords=ryzen+1400
The Motherboard:
https://www.amazon.co.uk/gp/product/B06WW9S5BY/ref=ox_sc_act_title_12?smid=A3P5ROKL5A1OLE&psc=1
The GPU:
https://www.amazon.co.uk/gp/product/B071XXZYDB/ref=ox_sc_act_title_8?smid=A3P5ROKL5A1OLE&psc=1
The Power Supply:
https://www.amazon.co.uk/gp/product/B00X8QBT6M/ref=ox_sc_act_title_14?smid=A3P5ROKL5A1OLE&psc=1
The SSD:
https://www.amazon.co.uk/gp/product/B01LXDQX35/ref=ox_sc_act_title_9?smid=A3P5ROKL5A1OLE&psc=1
The HDD:
https://www.amazon.co.uk/gp/product/B0088PUEPK/ref=ox_sc_act_title_1?smid=A3P5ROKL5A1OLE&psc=1
External HDD:
https://www.amazon.co.uk/gp/product/B01AJWNYLA/ref=ox_sc_act_title_4?smid=A3P5ROKL5A1OLE&psc=1
The RAM:
https://www.amazon.co.uk/gp/product/B0123ZBPDA/ref=ox_sc_act_title_2?smid=A2VG3212FDIQWH&psc=1
The Case;
https://www.amazon.co.uk/gp/product/B0160WQYJ2/ref=ox_sc_act_title_5?smid=AUWMZRMCN1SVB&psc=1
The Two Monitors:
https://www.amazon.co.uk/gp/product/B00ANCZ3OS/ref=ox_sc_act_title_11?smid=A3P5ROKL5A1OLE&psc=1
With a DisplayPort to D-SUB adapter:
https://www.amazon.co.uk/gp/product/B01GPMRYNM/ref=ox_sc_act_title_6?smid=AVXBDLJMD7W0C&psc=1
With HDMI to D-SUB:
https://www.amazon.co.uk/gp/product/B01KLKQN9U/ref=ox_sc_act_title_7?smid=AVXBDLJMD7W0C&psc=1
Windows 10 Key:
https://www.amazon.co.uk/gp/product/B01759H62S/ref=ox_sc_act_title_3?smid=A3B5FOLYGHCXJJ&psc=1
Keyboard & Mouse:
https://www.amazon.co.uk/gp/product/B001QSZ8BG/ref=ox_sc_act_title_10?smid=A3P5ROKL5A1OLE&psc=1