Yes absolutely certain. NPPL(M) has 24 month validity of rating period and the revalidation can only occur in the second 12 month period (this is because one of the requirements is that the pilot logs at least 6 hours in the second 12 months of the current validity period, so it cant be revalidated until those 6 hours have been done).
Amongst other things I'm a microlight examiner so I do know.