AOC Q27G4SRU 27 1440p 320Hz Fast IPS Gaming Monitor (HDR400, 2x HDMI 2.1, Height Adjustable)

Down from £219 when it was last posted here (Amazon, March). PriceSpy shows it at up to £228.95 over the last 3 months.
Also £188.99 at Overclockers / £189 at Box if you prefer them.
Amazons Choice, 4.3 (44 reviews), Prime delivery free returns.
Key specs:
– 27 2560×1440 Fast IPS, 320Hz, 1ms GtG
– VESA DisplayHDR 400
– 2x HDMI 2.1 1x DisplayPort 1.4 (HDMI 2.1 120Hz on PS5/Xbox)
– G-Sync Compatible / FreeSync, 48320Hz VRR with LFC
– Height (130mm), tilt, swivel and pivot adjustable stand
– USB hub, speakers, headphone out, VESA 100×100
Hard to beat for 1440p high-refresh IPS at this price comparable 300Hz IPS panels from LG/Asus are still £250£300.