People

Professor Theodore Konstadinides

Professor
Essex Law School
Professor Theodore Konstadinides
  • Email

  • Telephone

    +44 (0) 1206 874273

  • Location

    5S.4.9A, Colchester Campus

  • Academic support hours

    please email me to schedule an appointment

Profile

Biography

Theodore is Professor of Law and the School’s academic lead for public law. He is co-director of the Constitutional and Administrative Justice Initiative (Essex CAJI). Previously, Theodore held academic positions at the University College London and the University of Surrey. He is Senior Editor at the Nordic Journal of European Law and serves as the Blog Editor for the UK Association for European Law blog. Theodore’s teaching and research cover a broad spectrum of public law, encompassing UK constitutional and administrative law, EU constitutional law, and comparative constitutional law and theory. His academic work focuses on core principles of constitutionalism, investigating how powers are divided among government branches and the fundamental values rooted in the rule of law and constitutional justice as enforced by courts through judicial review. A central focus of Theodore's research delves into the European framework that influences the development of public law, addressing critical aspects like the allocation of competence between the EU and its Member States and the ensuing implications for constitutional identity, national sovereignty and the rights of citizens. He has delivered presentations on these matters on many occasions, including at the International Federation of European Law (FIDE 2021), where he was national rapporteur for the UK, addressing the topic of the role of national courts in the EU legal order. Theodore has written widely in the field of EU and UK public law. He has authored three monographs and has edited three research volumes spanning crucial aspects of European constitutional law, including criminal law, human rights protection, and external relations. Theodore’s most recent book on the 'Rule of Law in the European Union' is a pioneering exploration of how the EU and its institutions interpret the rule of law within the EU polity. Reviewed between 2018 and 2020, notable reviews appeared in the European Human Rights Law Review, Public Law, and the European Law Review. He is currently working on his fourth monograph titled 'The Constitution and the conduct of UK Foreign Affairs' which will be published by Oxford University Press. The aim of the book is to explore the separation of powers and especially the constitutional limits to executive power in the conduct of UK’s foreign affairs. He is also working on an idea for an edited volume on principles of constitutional justice and the various approaches different institutions adopt to implement these principles. Theodore is actively involved in policy impact, providing expert evidence that parliamentary committees, including the European Scrutiny Committee of the House of Commons and the International Agreements Committee of the House of Lords, frequently reference. He has also consulted the UK Government's Civil Contingencies Secretariat and the UK Foreign, Commonwealth and Development Office legal directorate. Furthermore, Theodore’s work has influenced the reasoning of institutions at the EU level. His early monograph, titled ‘Division of Powers in EU Law’, was cited by Advocate General Tanchev of the Court of Justice of the EU in Case C-414/16 Egenberger (2017) which pertained to the scrutiny of the extent to which religious organisations’ job requirements can be judicially reviewed. Theodore's research on the boundaries of national authority in regulating the acquisition and loss of nationality concerning EU citizenship was more recently cited by Advocate General Szpunar in Case C-118/20 JY (2021) to underscore the principle that Member States must adhere to EU law and are subject to review by the Court of Justice when dealing with situations falling under the scope of EU law. Theodore’s work has also had an impact on the European Central Bank where he has shared his insights with its Directorate General Legal Services regarding various constitutional challenges within the framework of the European Monetary Union. This collaboration was financially supported by the European Central Bank twice, in 2014 and 2018 through the ECB Legal Research Programme. Theodore has additionally secured funding awards for his research projects from various other sources including the ESRC Impact Acceleration account, the Swedish Institute for European Policy Studies; the Forum of Canadian Ombudsman; and the Uppsala Forum for Peace, Democracy and Justice. Recently, he participated as a team member in the 'Fundamental Constitutional Principles' project, led by E. Muir and T. Tridimas and supported by the European Law Institute in Vienna. Presently, Theodore is supervising three doctoral students: Mr. Abdullah Almajed, who is finalising his thesis on the subject of judicial review in Saudi Arabia; Miss Amelie Godfrey, who is researching on the constitutional safeguarding of EU derivative citizenship rights in the UK post-Brexit; and Miss Rebecca Amor, whose research focuses on exploring the democratic legitimacy of multi-stakeholder initiatives as a form of transnational private governance. Theodore welcomes approaches for supervision.

Qualifications

  • LLB Qld University of Kent,

  • LLM University of Kent,

  • PhD in Law University College London,

Publications

Journal articles (24)

O'Connor, N., Konstadinides, T. and Karatzia, A., Courting Controversy? The Constitutional Implications of the Court of Justice of the European Union’s Involvement in the Resolution of Disputes After Brexit

Konstadinides, T., (2021). Europe's Second Constitution: Crisis, Courts and Community. EUROPEAN LAW REVIEW. 46 (5), 704-705

Konstadinides, T. and Karatzia, A., (2019). The legal nature and character of Memoranda of Understanding as instruments used by the European Central Bank. European Law Review. 44 (4), 444-464

Konstadinides, T., (2019). Judicial independence and the Rule of Law in the context of non-execution of a European Arrest Warrant: LM. Common Market Law Review. 56 (3), 743-769

Konstadinides, T. and Dyson, T., (2016). Enhancing Energy Security in the European Union: Pathways to Reduce Europe?s Dependence on Russian Gas Imports. European Law Review. 41 (4), 535-556

Konstadinides, T., (2016). The Meso Level: Means of Interaction between EU and International Law: Customary International Law as a Source of EU Law: A Two-Way Fertilization Route?. Yearbook of European Law. 35 (1), 513-532

Konstadinides, T., (2015). Dealing with Parallel Universes: Antinomies of Sovereignty and the Protection of National Identity in European Judicial Discourse. Yearbook of European Law. 34 (1), 127-169

Konstadinides, T., (2015). In the Union of Wine: Loose Ends in the Relationship between the European Union and the Member States in the Field of External Representation. European Public Law. 21 (4), 679-689

Konstadinides, T., (2014). EU foreign policy under the doctrine of implied powers: Codification drawbacks and constitutional limitations. European Law Review. 39 (4), 511-530

Herlin-Karnell, E. and Konstadinides, T., (2013). EU Constitutional Principles as Housekeeping Rules in EU External Variable Geometry

Herlin-Karnell, E. and Konstadinides, T., (2013). The Rise and Expressions of Consistency in EU Law: Legal and Strategic Implications for European Integration. Cambridge Yearbook of European Legal Studies. 15, 139-167

Konstadinides, T., (2013). Civil Protection Cooperation in EU Law: Is There Room for Solidarity to Wriggle Past?. European Law Journal. 19 (2), 267-282

Konstadinides, T., (2012). Drawing the Line between Circumvention and Gap-Filling: An Exploration of the Conceptual Limits Around the Scope of Article 352 TFEU. Yearbook of European Law. 31 (1), 1-1

Konstadinides, T., (2012). When in Europe: Customary International Law and EU Competence in the Sphere of External Action. German Law Journal. 13 (11), 1177-1202

Konstadinides, T., (2012). Mass Surveillance and Data Protection in EU Law: The Data Retention Directive Saga

Konstadinides, T., (2011). Constitutional Identity as a Shield and as a Sword: The European Legal Order Within the Framework of National Constitutional Settlement. Cambridge Yearbook of European Legal Studies. 13

Konstadinides, T., (2011). Destroying democracy on the ground of defending It? the Data Retention Directive, the surveillance state and our constitutional ecosystem. European Law Review. 36 (5), 722-736

Konstadinides, T., (2010). La fraternité européenne? The extent of national competence to condition the acquisition and loss of nationality from the perspective of EU citizenship. European Law Review. 35 (3), 401-414

Konstadinides, T., (2010). Wavering between centres of gravity: Comment on Ireland v Parliament and Council. EUROPEAN LAW REVIEW. 35 (1), 88-102

Konstadinides, T., (2009). Wavering between the Centre of Gravity in Internal Market Harmonization Legislation and the Borderline between the Different Pillars in the EU Treaty. European Law Review. 35 (1), 88-102

Konstadinides, T., (2008). Citizenship within the Scope Ratione Materiae of Community Law: The Current Approach of the Court of Justice. European Current Law XI-XV. 4

Konstadinides, T., (2007). The Perils of the ‘Europeanisation’ of Extradition Procedures in the EU Mutuality, Fundamental Rights and Constitutional Guarantees. Maastricht Journal of European and Comparative Law. 14 (2), 179-200

Konstadinides, T., (2004). The Element of Conditionality in the Pre-Accession Strategy of the East and Central East European Enlargement. Common Law Review Prague. 12

Konstadinides, T., (2003). Now and Then: Fischer's Core Europe in the Aftermath of the Collapse of December 2003 Constitutional Talks. Irish Journal of European Law. 11 (1), 117-117

Books (7)

Konstadinides, T., (2025). The Constitution and the conduct of UK foreign affairs. Oxford University Press

Konstadinides, T., (2017). The Rule of Law in the European Union The Internal Dimension. Hart Publishing Limited. 1849464707. 9781849464703

(2016). Research Handbook on EU Criminal Law. Edward Elgar Publishing. 1783473304. 9781783473304

(2014). Human Rights Law in Europe. Routledge. 1138204552. 9780203538029

Dyson, T. and Konstadinides, T., (2013). European Defence Cooperation in EU Law and IR Theory. Springer. 1137281308. 9781137281302

Konstadinides, T., (2012). Division of Powers in European Union Law: The Delimitation of Internal Competence between the EU and the Member States. Kluwer Law International. 9041126155. 9789041126153

Eckes, C. and Konstadinides, T., (2011). Crime Within the Area of Freedom, Security and Justice: A European Public Order. Cambridge University Press. 113949547X. 9781139495479

Book chapters (22)

Konstadinides, T. and Karatzia, A., FIDE XXIX Congress 2020 National Courts and the Enforcement of EU Law: UK Report. In: The XXIX FIDE Congress in The Hague, 2020 Congress Publications, Vol. 1. Editors: Botman, MR. and Langer, J., . Eleven International Publishing. 493- 508. 9789462361287

Konstadinides, T. and Nic Shuibhne, N., (2024). A Constitutional Reading of EU Citizenship. In: Research Handbook on EU Constitutional Law. Editors: Besselink, L., Lupo, N. and Wendel, M., . Edward Elgar Publishing

Konstadinides, T., (2022). 'Comment on Opinion of Advocate General Sharpston in Case C-240/09 Slovak Bears'. In: Shaping EU Law the British Way: UK Advocates General at the Court of Justice of the European Union. Editors: Butler, G. and Lazowski, A., . Edward Elgar Publishing

Konstadinides, T., (2022). The Rule of Law as the Constitutional Foundation of the General Principles of EU Law. In: Research Handbook on General Principles of EU Law: Constructing Legal Orders in Europe. Editors: Ziegler, K., Neuvonen, P. and Moreno-Lax, V., . Edward Elgar Publishing. 287- 307. 978 1 78471 237 2

Konstadinides, T. and Sallustio, R., (2022). 'The Constitutionality of the UK’s Notification to Leave the European Union'. In: Research Handbook on Legal Aspects of Brexit. Editors: Cygan, A. and Lazowski, A., . Edward Elgar. 54- 72. 978-1-80037-313-6

Konstadinides, T., (2021). 'Member States as Trustees of the European Union in International Organisations: International Organisation of Vine and Wine (O.I.V)’. In: EU External Relations Law: The Case in Context. Editors: Butler, G. and Wessel, R., . Hart Publishing

Konstadinides, T. and Xanthopoulou, E., (2020). International Fight against Impunity and EU Counter-Terrorism Law: The Case of Foreign Terrorist Fighters. In: The Fight Against Impunity in EU Law. Hart Publishing. 1509926887. 9781509926886

Konstadinides, T. and Mantzari, D., (2018). The Nexus between EU Common Foreign & Security Policy and Energy Policy. In: Research Handbook in EU Common Foreign and Security Policy. Editors: Blockmans, S. and Koutrakos, P., . Edward Elgar Publishing. 331- 353. 978-1785364075

Konstadinides, T., (2018). The Competences of the European Union. In: The Oxford Principles of European Union Law, Vol. 1: The European Union Legal Order. Editors: Schütze, R. and Tridimas, T., . Oxford University Press. 9780199533770

Konstadinides, T., (2016). EU Law and International Cooperation in Criminal Matters: a tale of legal competence and political competency. In: Research Handbook on EU Criminal Law. Editors: Mitsilegas, V., Bergström, M. and Konstadinides, T., . Edward Elgar Publishing. 567- 579. 9781783473304

Mitsilegas, V., Bergström, M. and Konstadinides, T., (2016). Introduction. In: Research Handbook on EU Criminal Law. 1- 6. 9781783473304

Konstadinides, T. and O'Meara, N., (2014). Protection of Procedural and Substantive Rights in the EU and the ECHR: Introduction. In: Human Rights Law in Europe: The influence, overlaps and contradictions of the EU and the ECHR. Editors: Dzehtsiarou, K., Lock, T., O’Meara, N. and Konstadinides, T., . Routledge. 9780415825993

Konstadinides, T. and O'Meara, N., (2014). Rebalancing Judicial Protection in Criminal Matters after Lisbon and Stockholm. In: EU Security and Justice Law: After Lisbon and Stockholm. Editors: Arcarazo, DA. and Murphy, CC., . Hart Publishing. 77- 91. 9781849464222

Konstadinides, T., (2014). Mass Surveillance and Data Protection in EU Law: The Data Retention Directive Saga. In: European Police and Criminal Law Cooperation. Editors: Bergström, M. and Jonsson Cornell, AJ., . Hart Publishing. 9781782251491

Dyson, T. and Konstadinides, T., (2013). The Legal Underpinnings of European Defence Cooperation. In: European Defence Cooperation in EU Law and IR Theory. Palgrave Macmillan UK. 56- 85. 9781349448111

Dyson, T. and Konstadinides, T., (2013). Theoretical Contestation on European Defence Cooperation. In: European Defence Cooperation in EU Law and IR Theory. Palgrave Macmillan UK. 113- 135. 9781349448111

Dyson, T. and Konstadinides, T., (2013). Introduction. In: European Defence Cooperation in EU Law and IR Theory. Palgrave Macmillan UK. 1- 6. 9781349448111

Dyson, T. and Konstadinides, T., (2013). The Application of EU Law in Defence Collaboration and Armament Procurement. In: European Defence Cooperation in EU Law and IR Theory. Palgrave Macmillan UK. 86- 112. 9781349448111

Dyson, T. and Konstadinides, T., (2013). Explaining European Defence Cooperation. In: European Defence Cooperation in EU Law and IR Theory. Palgrave Macmillan UK. 136- 170. 9781349448111

Dyson, T. and Konstadinides, T., (2013). Mapping European Defence Cooperation. In: European Defence Cooperation in EU Law and IR Theory. Palgrave Macmillan UK. 7- 55. 9781349448111

Dyson, T. and Konstadinides, T., (2013). Conclusions. In: European Defence Cooperation in EU Law and IR Theory. Palgrave Macmillan UK. 171- 180. 9781349448111

Konstadinides, T., (2011). The Europeanisation of extradition: How many light years away to mutual confidence?. In: Crime within the Area of Freedom, Security and Justice: A European Public Order. Editors: Eckes, C. and Konstadinides, T., . Cambridge University Press. 191- 223. 9780511751219

Reports and Papers (1)

Konstadinides, T., (2018). The role of Parliament in the Constitution inquiry

Other (2)

Karapapa, S., Karatzia, A., Konstadinides, T. and O'Connor, N., (2020).Response to the consultation by the Ministry of Justice on the departure from retained EU case law by UK courts and tribunals,University of Essex, School of Law

Dzehtsiarou, K., Baker, RRB., Fontanelli, F., Ioannidou, M., Jago, R., Konstadinides, T. and Sarvarian, A., (2015).Family Visits for Life Long Prisoners: Written Comments in Khoroshenko v Russia. SSRN Electronic Journal,SSRN

Grants and funding

2022

Provincial Ombud Offices in Canada and fundamental constitutional principles: An empirical study

Forum of Canadian Ombudsman

Policy paper on 'European Citizenship revisited: A constitutional analysis of the transition from free movement rights to citizenship rights'

Swedish Institute for European Policy Studies (SIEPS)

Contact

t.konstadinides@essex.ac.uk
+44 (0) 1206 874273

Location:

5S.4.9A, Colchester Campus

Academic support hours:

please email me to schedule an appointment