Beagle-eye - nice handle! Imitation being the sincerest form of flattery.....
All you need to do to 'renew' your single engine piston privileges (assuming that your PPL is a lapsed 'lifetime' one) is to obtain a 'JAR Class 2' medical from your local nuts-fondler, do whatever refresher flying your friendly local club think you need, then do a Single Engine Piston (Land) Class Rating Renewal Proficiency Check with your local PPL Examiner. The SEP renewal prof.ck. is the usual take-off, steep turns, a couple of stalls, PFL and circuits which you'll have done before.
Enjoy! There would be some differences (mainly admin) in going for a NPPL - but if you can meet the medical standards, go for renewing your UK PPL - and do NOT convert it to a JAR-FCL PPL!