jgs43 & mark147,
You certainly can have a microlight rating added to your JAR-FCL.
I have mine in front of me now and it has two ratings on it - the IMC and "Microlight Aeroplanes (landplanes)". All date from this year, well after the introduction of the NPPL.
If you do a search here you should find some earlier discussion on the subject. The CAA only seem to have clarified the position this year which may be why LASORS seems a little misleading.
Now, back to the Spam recipes...