A point of interest is that you can only hold one EASA medical certificate. As your State of Licence Issue is Ireland, would it not be easier to just renew your SEP rating and then convert your UK CPL to an EASA CPL issued by your curent State of Issue. You could then go back to the CAA and get your old UK CPL reissied as a lifetime licence as well if you want it. Give Simon White a call at the IAA.