Aviation Week on 17th October reported that corporate jet operator GainJet Ireland has become the first to join Ireland’s new corporate jet registry, the first aircraft to be given an “EJ” registration, taking advantage of the new registry launched by the Irish Aviation Authority. Prompted by the success of the M registry started by the Isle of Man and the 2 registry started by Guernsey, the new programme was developed specifically for corporate operators for aircraft weighing over 5,700 kg maximum take-off weight. However, there has been little take-up in 3 years since its launch.
http://aviationweek.com/nbaa-2018/first-aircraft-joins-irish-ej-register