Seems very strange they don't put down weightshift as a mandatory differences training to be honest.
That would have required a Law Change that had the potential to open a bag of worms which the CAA did not wish to disturb. As there were no major safety issues they left well alone, but did place additional requirements on later licences. Remember, initially no licence was required at all to fly a Microlight!
Seems like there is some admin to do in order to get flying the Tecnam P96 here in Spain on a UK PPL.
A number of European States have entirely separate arrangements for microlights, in France they have a Microlight Licence so you need to check locally.