Thank you, Ifitaint.
...that the flight test (yes, GST, not LPC, since for the NPPL M ) might be unnecessary.
If he had a current SEP Class Rating, he could be issued with an NPPL(M) without any training or Test.
As his Microlight privileges (included in his SEP) have expired by more than 5 years he must do training as required and a GST including an Oral Theroretical Knowlege Examination
Ref:
NPPL cross crediting requirements at CAP804, Pt.II, Appendix 1, Section 4.2 b)
Or, renew
his SEP Class rating as already discussed above, (SEP includes Microlight Privileges) and any Differences Training required if swapping control systems. IAW ANO Article 62 (6) and Schedule 7 Part B Section 2
MJ