Northern Ireland is the only part of the UK that uses Single Transferable Vote (STV) as its electoral system for the European elections. All other UK electoral regions use d'Hondt closed lists. Northern Ireland uses STV for all elections except those for the Westminster Parliament, which use FPTP.)
Note that because NI uses STV the results table below is incomplete, since it only shows first preferences and the result of an STV election depends on lower preferences, not just first preferences. Although having said that, in all NI elections to the European Parliament, the three candidates with the most 1st preferences were in fact elected.