I'm pretty sure Scan125 doesn't work with the BC75
Correct! Scan125 specifically blocks support for the 75 scanners. There are other programs, and Uniden's own program for the 75 scanners will be able to do programming of the 75 scanners.
Scan125 is a real time control, logging, programming etc. with full virtual console and display. Sadly the 75 scanners have a totally different display format to the 125 scanners. Whilst the displays are different the basic commands are the same.
However as there is the free Uniden program to program memories etc. on the 75 scanners it makes no sense for Scan125 to just sport memory programming.
If/when the UK Uniden importer has a 75 scanner to give me / or let me have one on extended loan then I'll be able to produce a Scan75 program. I've had offers of private loans of 75 scanners but unless you live next door to me then I will not be comfortable with borrowing your scanner. I don't want the responsibility or pressure to get something done in anybody else's time frame.