Hi Leon
I have only done the nppl m. GST, from what I gather the differences are
nppl - 2 cross country's with 1 away landing each
ppl - 2 x/c with 2 away landings each, and further distance
nppl - no nav / radio aids
the written exams are similar, I guess your taking the nppl sep ? in which
case the aircraft general / principals of flight are same
nppl m is slightly different