I presume you are referring to the Kodak HIE film. I think it is still being made but not being imported to Ireland anymore. I don't know of any other Irish retailers who would have it.
Online options would be
www.silverprint.co.uk or
www.freestylephoto.biz
I just gave freestyle an order yesterday for 25 rolls of 120 Efke and Rollei IR films and could have got you some HIE had I known in time. The order was dispatched today so too late to add to it, sorry.
Peter