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Research Interests

Human rights, international law, EU law, financial market regulation, commercial law

Additional Information

Professor at the University of Oslo and a member of the ICSID Panel of Arbitrators. UN President-Rapporteur on Arbitrary Detention 2009-2015, Director of the British Institute of International and Comparative Law 1999-2006, and the Centre of European Law at King’s College, University of London 1991-1999. General Editor of the International and Comparative Law Quarterly 2000-2006 and from 1996, of European Business Law Review. 

Honorary Director of Studies, IALS 1992, Senior Research Fellow in Corporate and Commercial Law IALS 1996-7, Senior Research Fellow IALS 1997-2021, 2004-2019 also Director of the Centre for Commercial and Financial Law.

Barrister, England and Wales, and Advokat, Norway. Bencher of the Inner Temple from 2002.

The Lord Chancellor's recommendation when he in 2019 was appointed honorary Queen’s Counsel: ‘A stellar academic recommended for his work in comparative and international law, in familiarising academic and practising lawyers and the judiciary in this jurisdiction with other systems of law and by encouraging exchanges of views and approaches between common and civil lawyers.’

Chevalier of the Légion d’honneur in 2009, and commendatore  of the Ordine al merito della Repubblica Italiana in 2008 and grande ufficiale in 2019.

Other Information

Counsel in ICSID arbitrations. Andenas has also intervened – as Chair-Rapporteur of the UN Working Group on Arbitrary Detention – before UK courts, and before the Supreme Court, in Belhaj & Anor v Rt Hon Jack Straw MP & Ors [2017] UKSC 3. He has also represented parties and interveners in several cases before the European Court of Human Rights and Norwegian courts. He has involved groups of students in several cases that have come to him from students involved in legal student clinics not managing to get other lawyers to take them to court. In one such case, Huseini v. Ministry of Justice, reported in English in International Law Reports, 181 ILR 419, a Norwegian court of appeal gave a declarative judgment that the detention of child asylum seekers in a detention centre nd Zahra Huseini violated their rights under Article 93(2) and Article 94(1) of the Norwegian Constitution,  Articles 3, 5(1) and 8 ECHR, and  Article 37(a) and (b) ICCPR.



M Andenas and E Bjorge, ‘Les principes généraux du droit comme outils de résolution des conflits de norms’ in M Guyomar et al (eds) Mélanges en l'honneur de Bernard Stirn, Paris, Dalloz 2019.

More than 50 books including:

  • The Fight Against Poverty and the Right to Development (Springer 2021)
  • Financial Regulation and Civil Liability in European Law (E Elgar 2020)
  • A Farewell to Fragmentation  (CUP 2016)
  • Courts and Comparative Law (OUP 2016)
  • The Foundations and Future of Financial Regulation (Routledge 2013) European Comparative Company Law (CUP 2009).


Andenas is the co-editor of a special issue of Global Constitutionalism (Cambridge University Press), M Andenas and G Wallace Brown (eds) ‘Symposium on A Cosmopolitan Legal Order’, (2019) Global Constitutionalism with their introductory chapter, ‘The European Convention of Human Rights as a Kantian Cosmopolitan Legal Order’. 

M Andenas and J R Leiss ‘The Systemic Relevance of “Judicial Decisions” in Article 38 of the ICJ Statute’, Heidelberg Journal of International Law ZaøRV 77 (2017) 1-66.