In Ireland as far as i'm aware the PPL only is transferrable, provided that you have 100+hrs. Some Groundschool and then a Flight test to obtain an Irish PPL. Even though Ireland is a JAA state, it's not exactly a JAA Licence you'll recieve, and may not be accepted by other JAA states without further headache.
For the CPL + ATPL you must complete the full course of training in JAA schools. (correct me if i'm wrong)
Best bet - Stay there and do a JAA conversion in one of those CAA / JAA schools.
