Once you've done the mandatory differences training, you are then on a separate currency regime - which is 5 hours every 13 months with a requirement for a stamp in your logbook from an "R" examiner. This is separate from the JAR 12/24 requirement.
So long as your JAR licence actually exists, if it's currency lapses so far as I understand it you can fly microlights on that currency stamp which has become separate to the currency signature for SEP in your JAR licence.
See you in the clubhouse at EGHP, or failing that at some of the local strips.
G