For example, EASA FCL does not itself provide for a pilot with a LAPL(A) with SEP privileges (or a PPL(A) with SEP rating) to fly a microlight aircraft, but neither does it object to national authorities extending the use of that licence on a national basis to non-EASA aircraft (such as a microlight) through national legislation. The UK has legislated to allow pilots qualified for SEP(land) aircraft to fly G registered microlight aircraft in the UK, providing the pilot undergoes differences training for microlight aircraft, and has this training signed-off in their personal log book by a suitably qualified instructor. In this context, Differences Training is used to permit flight of a category of aircraft rather than simply a feature within an aircraft.
Differences training | Private Pilots | Personal Licences and Training
This issue is actually clarified on the CAA website.
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