Both Nova and SDS ship to Ireland but ask that you check first for cost of shipping. Nova will deliver to the U.K. for 5.95 irrrespective of weight or size but charge more for N Ireland destinations. The Nova site also links to barkerphotographic in county Cork which also carries enlargers but without any prices and without saying if they are new or secondhand.

If you can't do a deal with paul c5x4 or others who might offer enlargers then things don't look too bad with the above 3 sources.