European driving licences are recognised by the united kingdom In case the driving test was passed in an EU/EEA country, and can be used both equally if the holder is visiting or residing while in the country. They can also be exchanged for your UK (the two GB and NI) https://irelanddrivinglicenseproc02356.dsiblogger.com/62434796/the-definitive-guide-to-driving-licence-in-the-republic-of-ireland