Thank you Svetlana, that helps!
I know of Vuescan but I’ve never tried it. I might give the trial a go but as I can already produce a TIFF that PL can read using the scanner’s native Nikon Scan 4 software**, which is free, I’m not sure that it will be of much benefit to me, certainly not to my wallet 
**Yes you can get this ancient software to run on Win 10:
https://forum.dxo.com/t/negative-reversing/13151/16