I did in the end, a 1tb WD Black gaming nvme for £60 and something I was dumbfounded by, a 4tb WD black PCIe ssd I had to Google it because I was so shocked, sold and fulfilled by Amazon US, so I’d have to import it but it was £136 pounds, Google telling me it’s £800 to £1000, amazon has since said that the item is unavailable and the 1tb has now gone on sale.

WD Black AN1500 4TB SSD

My bad, I’ve mixed them up, thanks for mentioning that