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Dr Mario Mendez, BA (Lond), LLM (William & Mary), BCL (Oxon), PhD (EUI), PGCAP (QMUL)

Senior Lecturer

Tel: +44 (0)20 7882 3958


Mario Mendez

Mario Mendez graduated with a first class degree in Law and Politics from QMUL and was awarded the Drapers’ Scholarship to study at the College of William and Mary in Virginia where he completed an LLM in American Legal Studies. He was awarded a distinction on the BCL at the University of Oxford and the Vinerian Scholarship Proxime Accessit (second place). He completed his PhD at the European University Institute (EUI). He completed the Post-Graduate Certificate in Academic Practice at QMUL (awarded with distinction) and is a fellow of the Higher Education Academy.

His research interests are in constitutional law (EU, UK and comparative). Most recently he has co-authored a monograph entitled Referendums and the European Union: A comparative inquiry for the Cambridge Studies in European Law and Policy series; a book which has its origins in a project funded by the Swiss National Science Foundation. He is currently co-authoring a report on referendums on European Union matters for the Constitutional Affairs Committee of the European Parliament.

Mario has worked for the Academy of European Law at the EUI and has spent periods visiting at the University of Cambridge (Centre for European Legal Studies), the University of Michigan’s Law School, and as a trainee at the European Commission. He is a research associate at the University of Zurich’s e-Democracy centre with whom he collaborated in developing a voting advice application for the 2012 London mayoral elections. He was a lead member of the QMUL team that collaborated with the Preference Matcher consortium in developing a voting advice application for the 2015 UK General Election.  

He is a former member of the editorial committee of the journal Public Law.

He is one of the co-directors of QMUL's Centre for European and International Legal Affairs (CEILA), and a member of QMUL's Centre for Law and Society in a Global Context (CLSGC) and Centre for European Research.


Undergraduate teaching:

  • LAW4001 Public Law
  • LAW5105 Law of the European Union
  • LAW6160 Comparative Constitutional Law.



  • Referendums on EU Matters (with F. Mendez) (forthcoming European Parliament 2017)
  • ‘Constitutional Review of Treaties: Lessons for Comparative Constitutional Design and Practice’ (Jean Monnet Working Paper 08/16 available at (forthcoming in (2017) 14 International Journal of Constitutional Law 1)
  • ‘Direct Democracy and the European Union’ (with F. Mendez) in Ruth, S., Welp, Y., and Whitehead, L (eds) Let the people rule? Direct Democracy in the Twenty-First Century, (ECPR Press, 2016)
  • Referendums and the European Union: A comparative inquiry (with F. Mendez and V. Triga)  (Cambridge University Press 2014) (reviewed in Political Studies Review (2015: 615); EUSA Review (2014: 22)
  • The Legal Effects of EU Agreements: Maximalist Treaty Enforcement and Judicial Avoidance Techniques (Oxford University Press 2013) (available on open access) (reviewed in Common Market Law Review (2014: 1548); Yearbook of European Law (2014: 569); Journal of Common Market Studies (2014: 1164); European Law Review (2015: 294); Legal Issues of Economic Integration (2014:211)
  • ‘The Enforcement of EU Agreements: Bolstering the effectiveness of Treaty law?’ (2010) 47(6) Common Market Law Review 1719
  • ‘Comparing Privacy Regimes: Federal Theory and the Politics of Privacy Regulation in the European Union and the United States’ (with F. Mendez) (2010) 40(4) Publius: The Journal of Federalism 617
  • ‘Referendums and European integration: beyond the Lisbon vote’ (with F. Mendez) [2010] Public Law 223
  • ‘The Legal Effect of Community Agreements: Maximalist Treaty Enforcement and Judicial Avoidance Techniques’ (2010) 21(1) European Journal of International Law 83
  • ‘Direct Democracy in the European Union: How comparative federalism can help us understand the interplay of direct democracy and European integration’ (with F. Mendez and V. Triga) (2009) 29(1) Revista de Ciencia Política 57
  • Passenger Name Record Agreement (2007) 3(1) European Constitutional Law Review 127
  • ‘Introducing E-voting for the European Parliament Elections: the Constitutional Problems’ (with A. Auer) in Trehsel and Mendez (eds), The European Union and E-voting (Routledge, 2005)
  • ‘The impact of WTO rulings in the Community legal order’ (2004) 29 European Law Review 513.

PhD Supervision

Dr Mendez welcomes proposals for postgraduate supervision in the fields of UK, EU and comparative constitutional law.

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