Have you made any decisions / progress EchoGolf?
No progress with the CAA or BMAA (which I recently joined as a student) unfortunately, and I gave up with pursuing it. The CAA neither answered my emails nor the phone despite promising to when I saw them at the Sywell LAA rally where they acknowledged they had my email.
If you read this month's (November 2019) MF magazine you will find a table of average hours to qualification by age group for an NPPL(M) within the "Training tips" article at page 20. Even the teenagers take 40+ hours and the average is 56 hours. There is also a very wide range of standards operated with the BMAA microlight schools and acknowledgement by them that there are more than a few unsatisfactory schools and instructors operating out there which continue to be allowed to do so, even made CFI. Then consider that the NPPL(M) because of the NPPL(SSEA) dead end is a license to nowhere if you want to progress up.
I have therefore reached some conclusions. I found that there remain professionally run PPL training schools in the UK training for less or about the same hourly rate as the microlight schools in aircraft such as the Grob 115 even 4 seater PA28. Such aircraft are also readily available to hire by the hour everywhere. Therefore if one is going to take 45+ hours to qualify, which the stats suggest, the right thing to do is to do the full international PPL from the beginning because that license is fully recognised internationally for a light aircraft not just a microlight within the UK. It can then also be readily endorsed in minimal time within the provisions of CAP804 to also get you your microlight rating if that is what you want to fly so you can then spaff £40k+ on a reasonable second hand rag and tube 3 axis microlight capable of actually going distance or £70k+ on a new one!
I now regret having started the NPPL(M) and wish I had known all this at the beginning and started with the full PPL instead and then sought the microlight rating afterwards, assuming I then still wanted to fly one. I've done 30 or so hours and 4 hours solo microlight training. I'm seriously considering writing off that training and starting a PPL even now.
Microlighting started as a cheap way to get airborne for your ordinary man. Unfortunately it no longer is and depending on the flying you want to do, starting with a GA PPL will certainly afford you more options going forward and may yet be a lot cheaper, internationally recognized, much more flexible and convenient.