collect under EU law. O’Connor referred the case to the European Court of Justice under the preliminary reference procedure. The ECJ in 2018 answered the questions posed and, in May 2018, O’Connor granted a declaration that the Irish Revenue could not fulfil the request of the Greek authorities to recover the sum sought. In 2018, he found for Graham Dwyer, the man convicted of the murder of Elaine O'Hara, ruling that the legislation relied on to secure his conviction was contrary to EU law. The decision was appealed to the Supreme Court of Ireland, which in turn made a reference to the European Court of Justice. He is a member of the board of the Courts Service. In July 2020, he was appointed as a member of a three-judge tribunal into the CervicalCheck cancer scandal with chairperson Ann Power and retired judge Brian McGovern. O'Connor continued hearing cases in the High Court during his time on the tribunal. O’Connor delivered judgment for the Court of Appeal in April 2022 which clarified the application of principles under the 2004 EU Citizens Directive. In December 2022, he awarded €365,000 to a factory worker who had sustained a back injury. References Living people High Court judges (Ireland) Irish barristers People educated at Glenstal Abbey School Alumni of University College Dublin Alumni of Trinity College Dublin Alumni of King's Inns Year of birth missing (living people)