Having mentioned saving and loading via network port, I finally remembered where I'd seen such extensions for the QL. I don't know if this would be of interest, bwinkel67?
http://www.dilwyn.me.uk/demos/Charvel.zip
Charvel.zip (136K) - holds the Charvel Soft demo disk, containing:
Q-SPEC by Dave Halls Barker, a collection of basic extensions which allows the to load & save (ZX Spectrum compatible) to and from tape
Picture Show by Dave Halls Barker.