Thanks Whopity. By happy co-incidence BM aviation is close to where I will be in Spain so we may well visit them. However a quick email to BM and they advise they DO require a JAR licence to fly their German reg (?) aircraft in Spain, and indeed any non G- reg aircraft in Europe. A visit to the CAA website LASORS section still does not make it very clear what I need to do. Lots of info for people with NPPL's and with PPL's from Non-ICAO member states. Think I need to give the CAA a call. I'm somewhat resigned to having to spend some money (this is the CAA after all !) but don't think it reasonable to be forced to take a flying test ...!!