What’s your budget? I have a pretty high spec iMac 2015 I can price up but depends on your budget.
Actually I’ll just put it here since I might put it on the classifieds later:
– Apple iMac 27″ 5K
– i5 3.3GHz
– 512gb SSD
– 8GB RAM (or 64GB RAM for +£600)
– 4GB Radeon 395X
– Magic Keyboard
– Magic Mouse 2
– Applecare (just under a year I believe but will double check)
– Fully boxed
£1900 + delivery.