Thanks for that.
I tested with forcepink and it worked as expected.
I also managed to make the font a readable size.
Unfortunately, I was not able to find a font size that was large enough to comfortably read without being too large for the text boxes/windows/menus. Also, the icons and so forth remain very small and difficult to click on.
I have attempted to run at lower res using the graphics options in game and restarting but this seems to result in a windowed mode in which icons and text remain very small. To try and stop this I edited the Settings.ini file and checked with Fullscreen=0 and Fullscreen=1 but this didn't seem to make a difference. I also tried to edit the steam launch options to include -fullscreen and also tried with -fullscreen -w <1600> and -fullscreen -w <1024> but these didn't help either.
Not sure if you have any more advice. Looks like I might need to wait for the update for a scaling UI.