ANO Article 62(6):
(6) A Part-FCL licence with single-engine piston aeroplane privileges is not deemed to be rendered valid for a microlight aeroplane unless the holder of the licence has undergone differences training in accordance with Section 2 of Part B of Schedule 7 , appropriate for a microlight aeroplane class rating.
so........
ANO Schedule 7 Part B Section 2:
If the aeroplane has:
(aa) three axis controls and the holder's previous training and experience has only been in an aeroplane with flexwing/weightshift controls;
(bb) flexwing/weightshift controls and the holder's previous training and experience has only been in an aeroplane with three axis controls; or
(cc) more than one engine,
before exercising the privileges of the rating the holder must complete appropriate differences training.
All came from an earlier thread.