I was under the impression that whilst an NPPL(M) or (TMG)
No such thing as an NPPL TMG its SLMG. The old UK PPL SLMG was an ICAO licence (40 hrs) though the current one is not, however it seems to still be accepted as if it is. Many States still do not require a licence to fly a Microlight and are quite content with those who do have a licence. The NPPL with SSEA rating is not accepted outside the UK.