Congratulations to Greta Warren on her PhD “User-centred counterfactual explanations for explainable AI”! Greta’s PhD was co-supervised by Mark Keane and Ruth Byrne; its external examiner was Dr Tim Miller, Queensland, Australia. Greta’s PhD was formally conferred at a ceremony in University College Dublin in December 2024. Pictured at the ceremony are Greta (left) and Mark (centre), along with another of Mark’s PhD students, Courtney Ford (right).