The letter is signed by the Reverend John McDowell and Archbishop Eamon Martin, the Church of Eire Archbishop of Armagh and Primate of All Eire and the Catholic Archbishop of Armagh and Primate of All Eire respectively, in addition to the Reverend Dr David Bruce, moderator of the Presbyterian Church in Eire, the Reverend Dr Tom McKnight, president of the Methodist Church in Eire, and the Reverend Dr Ivan Patterson, president of the Irish Council of Church buildings.