Renewal by Test
Hi Seymour,
I suspect the best option is to get your PPL (CAA or JAR-FCL) renewed by test, LASORS Section F1.5 refers. That will cover you for the Ikarus. Then any training you need for the insurance or rental requirements will be on top of that.
I know of one local pilot who went to the trouble of trying to get an NPPL (SSEA) as he couldn't meet the medical requirements of JAR Class 2 and wanted to continue flying. They sent the paperwork and cheque back, telling him to continue flying on his CAA PPL(A) using the NPPL Medical Declaration. I appreciate your problem is not medical, but shifting over to NPPL(M) may reduce your flexibility.
Good luck getting back in the air.
Safe Flying,
WKW.