Thank you for your comments PiC. That was precisely my train of thought, although trying to interpret LASORS for my circumstance gave me some ambiguity.
So, it is will fine for me to continue for the JAA CPL based on my ICAO PPL, that much I know for sure. Once I hopefully complete the JAA CPL with a pass, can I immediately start (ie. the next day) a ME add-on without actually having the licence book in my hand, merely a piece of paper with a 'Pass' idicated? The same with the IR then - could I start the JAA IR without having the CPL licence book actually issued in my hand, only the piece of paper? Has anyone actually had gone through a similar experience? Thanks