The 2021 expert group meeting was held via Zoom on 28 September 2021 due to COVID-19 restrictions. Experts were representatives of the authority responsible for the transfer of foreign national prisoners which include national prison services, Ministries of Justice, Judges and Prosecutors. The meeting was chaired by Kris Van Opdenbosch (Belgium). This report, prepared by Nalini Hussain, presents a summary of the discussions. The meeting was about updating representatives on the European Judicial Network (EJN), on the European Commission, and how member states find contact details for competent authorities. There was also a presentation on a research project called The cross-border dimension of punishment in the EU. An integrated approach: criminal law, penology and immigration.