José A. Brandariz is a professor of criminal law and criminology at the University of A Coruña, Spain. He is a former associate editor of the European Journal of Criminology (2018-2022) and a former member of the executive board of the European Society of Criminology (2016-2019). He has published some 20 books and 150 journal articles and book chapters, and has been visiting professor and visiting research fellow at various international universities and research institutes, such as Bologna (Italy), Buenos Aires (Argentina), Coimbra (Portugal), Chicago (USA), Freiburg (Germany), Northern Arizona (USA), Pompeu Fabra (Spain), Turin (Italy) and Warsaw (Poland), among others. Prof Brandariz has particularly focused his research on migration enforcement, bordered penality and citizenship issues in the last decade. Having participated in various EU-funded projects, he recently co-coordinated a Spanish team participating in two supranational research actions on EU criminal justice cooperation procedures (2017-2020). Witold Klaus is a professor at the Institute of Law Studies, Polish Academy of Sciences and Head of the Department of Criminology and of the Centre for Migration Law Research. He is also a research fellow in the Centre of Migration Research at the University of Warsaw. He is a lawyer, criminologist, migration researcher and NGO activist. He is a former executive secretary of the Polish Society of Criminology (2008-2018), and serves as editor-in-chief to the oldest Polish criminological journal ""Archiwum Kryminologii"" (Archives of Criminology). He held scholarships from: the British Academy (UK), the Max Planck Institute for Foreign and International Criminal Law (currently the Max Planck Institute for the Study of Crime, Security and Law, Germany) and the US government. His main areas of academic interests include refugee and immigrant rights, deportation studies, crimmigration, victimology and victimisation of vulnerable groups in society. Currently he leads a project on experiences of Poles deported from the UK and the EU in the aftermath of their contact with criminal justice system (funded by National Science Centre, Poland). Agnieszka Martynowicz is a Senior Lecturer in Criminology at Edge Hill University (EHU) in England. She is currently the ‘Features’ editor for Justice, Power and Resistance (journal, Bristol University Press) and a member of the Editorial Committee of ‘Archiwum Kryminologii’ (Archives of Criminology). Dr Martynowicz is a Core Member of the Migration Working Group – North West (EHU) and a long-standing member of the European Group for the Study of Deviance and Social Control. Before entering an academic career in 2016, she worked as a researcher and policy officer in a number of statutory and voluntary sector organisations, including the Northern Ireland Human Rights Commission in Belfast, the Institute for Conflict Research (Belfast) and the Irish Penal Reform Trust in Dublin. Between 2011 and 2016, she worked as an independent research and evaluations consultant, delivering projects with organisations such as the Irish Council for Civil Liberties and the European Prison Litigation Network. She is an author and co-author of numerous publications relating to prisons and prisoners’ rights; migration and migrant rights; ‘crimmigration’, children’s rights, and youth justice.