MJ
No interpretation necessary:
"in accordance with Section 2 of Part B of Schedule 7"
is pretty explicit.
If you want to fly a three-axis microlight, no differences training required.
BUT as always, HIGHLY recommended for your own personal safety.
ps. And as an instructor and microlight examiner, no requirement to "sign off"or anything like that.
Now, in the case of a three-axis microlight pilot with an NPPL M who wants to fly weightshift, then the differences training IS required and consists of such training as required to meet test standard (no need for an actual test) followed by an endorsement in the logbook.
(Quite how an instructor, who is not actually an examiner, is meant to know precisely what est standard actually is - because if they did, no candidates would fail! - is another matter.)
I would always suggest, for safety that even a light aircraft pilot who aims to fly a three-axis microlight should do a few hours with an instructor until at tes standard, and if so than a quick signature is not a lot extra.
But it is not LAW.