Staff Profile:Dr Deni Mantzari

Ms Deni Mantzari
Job Title:

Dr Despoina Mantzari is module convenor and lecturer in the following courses on the LLM programme (on campus and distance learning): EU Energy Law and Regulation, Comparative Oil and Gas Policy, Competition Law and Advanced International Commercial Law.

She is also the PGT Exam and Projects Officer for the Commercial Law programmes

Areas of Interest:

Competition Law (EU, US, UK); Regulated Industries Law (energy, telecoms, financial markets, pharmaceuticals), especially interdisciplinary and comparative approaches as well as the links with other aspects of economic law; Administrative Law (EU, US, UK), Law, Economics and Politics; Pharmaceuticals Regulation; The Behavioural Approach to Regulation.

Research groups / Centres:
  • Member of CCLFR (UoR)
  • Associate Member of the ESRC Centre for Competition Policy, UEA
  • Associate Member of the Centre for Law, Economics and Society, UCL
  • Athens Bar Association (non-practicing)
  • Society of Legal Scholars
  • British Institute of International and Comparative Law
  • European Consortium for Political Research, Standing Group on Regulatory Governance
  • Competition Law and Economics Network
  • Associate Fellow, HEA;
  • Property, Transactions and the Market (Chair), University of Reading Research Group
Jump to: 2016 | 2015 | 2013
Number of items: 3.




This list was generated on Mon Sep 26 04:50:05 2016 BST.

Mantzari, D., (2014), The Process of Regulatory Appeals in the UK: One Size Does Not Fit All. Centre for Competition Policy Research Bulletin Issue 27. Available online at:

Mantzari, D. and Korah, V., (2012). It Takes One to Tango. The Single UK Competition and Markets Authority. Antitrust Chronicle, Competition Policy International, 5(1). Available online at:

Case - notes
Mantzari, D. (2011), The EC and CJEU Approach to Pharmaceutical Parallel Trade. Parallel Trade: The Challenges Ahead, Pharma Pricing and Reimbursement, IMS Health, 16(4), 109

Mantzari, D. (2009), Case T-196/04 Ryanair v Commission: a Critical Comment. Newsletter of Administrative Law 49(1). (in Greek)

Shorter Articles
Mantzari, D., What behavioural economics brings to financial regulation' ESRC Britain in 2015 (forthcoming)

Responses to Consultations
Hviid, M., Mantzari, D., and Waddams, C., (2014), Response to Ofgem: Consultation on a Proposal to Make a Market Investigation Reference in Respect of the Supply and Acquisition of Energy in Great Britain. Centre for Competition Policy Responses to Consultations. Available online at:

Deller, D., Hviid M., Jeon, JY, Mantzari, D., Waddams, C and Zhu, M. response to OFGEM, 'Protecting Consumers in Collective Switching Schemes' (April 2014) Centre for Competition Policy Responses to Consultations. Available online at:

Conference Papers

D Mantzari, 'Retail Price Regulation in Competitive Energy Markets: Main Issues and Challenges' 9th IMEDIPA Conference on Competition Law and Policy, 15-16 April 2016, Athens, Greece

'Judicial Scrutiny of Regulatory Decisions: Institutional Dimensions' at SMU-ANU-Reading Research Forum, Singapore, September 2015.

'The Liberalisation of Retail Energy Markets: Lessons from the UK', Italian Association of Energy Law-AIDEN, 3 December 2015, Milan, Italy

'The UK Energy Market Competition Investigation: What Future Role for Ofgem?', New Voices in Commercial Law Seminar Series, Queen Mary University of London, November 2015

'Judicial Review of Evidence-Based Regulation: Normative Implications', EPLO and IMEDIPA Conference on The Future of Regulation: Between Expertise and Democracy, 22 July 2015, Athens, Greece

'Regulation through Litigation? The Case of Preliminary Rulings in the EU Energy Sector', 4 Biennial Conference of the European Union Studies Association (EUSA), 5-7 March 2015, Boston, USA

'The Impact of Economic Evidence and Analysis on the Regulator's Discretionary Power: Focus on Utilities Regulation in the US and the UK', 5th Biennial ECPR Standing Group for Regulatory Governance Conference, 25-27 June 2014, Barcelona, Spain

'Has the Increased Recourse to Expert Economic Evidence and Analysis Transformed Administrative Discretion? Evidence from the UK Utilities Regulation', 8th Competition Law and Economics European Network ('CLEEN'), 10-11 June 2014, Norwich, UK

'The implications of economic evidence for the Court-Agency Relationship in the Realm of Utilities Regulation in the US and the UK', CCP Research Seminar, 30 January 2013, Norwich, UK

'Towards a complementary relationship? The judge and the agency in the realm of economic regulation', 4th Biennial ECPR Standing Group for Regulatory Governance Conference, 27-29 June 2012, Exeter, UK

Book Reviews
'The Historical Foundations of EU Competition Law' Kiran Klaus Patel and Heike Schweitzer (eds) European Law Review (forthcoming January 2014)

'European Union Law of State Aid' Kelyn Bacon (ed) (2014) World Competition (forthcoming September 2014)

'Joint Ventures and EU Competition Law' Luis Silva Morais World Competition (forthcoming September 2014)

'EU Energy Law' Angus Johnston and Guy Block (2014) 37(1) World Competition 143

'Telecommunications Law and Regulation' Ian Walden (2014) 37(1) World Competition 138'

European Telecommunications Law and Technological Convergence. Deregulation, Reregulation and Regulatory Convergence in Television and Telecommunications' Pablo Ibáñez Colomo (2013) 38 European Law Review 905

'Vertical Agreements in EU Competition Law' Frank Wijcmans and Filip Tuytschaever, (2012) 35(3) World Competition 563

'Directory of EU Case Law on Merger Control. The Merger Brick' Steven Nöe (2012) 35(3) World Competition 560

'Merger Decisions and the Rules of Procedure of the European Community Courts' George Cumming (2012) 35(2) World Competition 383

Deni was invited to deliver a four-hour workshop at the University of Brescia (Italy) on judicial review of economic evidence in EU Courts in January 2013. The training program was an education project created by two Italian Universities (Universities of Brescia and Salento) and Paris 13, and financed by the European Commission. 

LL.B. (2007), National University of Athens; LL.M European Union Law (2008), UCL; PhD (2014); Qualified Advocate (Athens)

Biographical Details:

Despoina (Deni) Mantzari joined the School of Law at the University of Reading in September 2014 as a Lecturer in Law. She holds a PhD from UCL (AHRC doctoral scholarship), an LL.M in European Union Law (distinction) from UCL and a law degree from the National University of Athens (merit). Since September 2014, she is an Associate Member of the Centre for Law, Economics and Society at UCL and of the Centre of Competition Policy at the University of East Anglia.
Deni is a competition lawyer with a particular interest in the interaction between competition law and regulation in a number of regulated industries (e.g. energy, telecoms, financial services, healthcare). Deni's PhD thesis ('Appeals from Utilities Regulators in the US and the UK; What are the Limits of Judicial Review of Economic Evidence) explored the transformation of judicial review in the context of appeals from utilities regulators in the US and the UK, following the regulators' greater recourse to expert economic evidence and analysis. It examined the judicial scrutiny of economic evidence in both generalist courts (i.e. UK High Court, US Federal Courts) and in specialist courts (i.e. UK Competition Appeal Tribunal) and revealed a set of micro-level (e.g. standard of review, court's rules of procedure) and macro-level (e.g. cultural and socio-political factors) factors that determine the reception of economic evidence in courts. Her work is profoundly interdisciplinary and draws on economics and political science.
In 2013-2014, Deni was a Postdoctoral Research Fellow at the ESRC Centre for Competition Policy at the University of East Anglia. In 2010 she was awarded an AHRC Study Visit Fund and spent a semester as a Visiting Researcher at UC Berkeley Boalt Hall School of Law. She has also attended a number of JD Courses in the areas of antitrust and regulation as well as law courses at Université de Reims-Champagne- Ardenne in France (Erasmus Programme).
Deni has worked as a trainee lawyer and qualified to practice law in Greece (Athens Bar Association). She has also been invited in the judicial training programme of the European Commission (2013) and as a guest lecturer in many institutions (e.g University of Bath - School of Management, UCL).
Deni is book review editor for the journal World Competition (Kluwer) and member of the journal's editorial board.
Deni Mantzari

Contact Details

+44 (0) 118 378 8469
+44 (0) 118 378 4543

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