EASA confirmed that there is no reason why a RF cannot continue, or indeed to apply for registration, to conduct training for purely national licences / ratings.
In response to the following question from the Netherlands:
Can RF remain RF and train for national licences only?
The EASA response was:
Yes, training for JAR-compliant PPL will be possible during the opt-out period, and training for national licences for Annex II aircraft also beyond.
CAP 804 Section 5 Part A Subpart 1 Page 3 states that, for the NPPL (SSEA):
The course shall be undertaken at an Air Training Organisation within the UK or Isle of Man...
Although quite what an 'Air Training Organisation' is, I don't know......
