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Chambers of Mark Cannon QC

Living Wage
Work 020 7822 2000
Fax 020 7822 2001
4 New Square (Chambers of Mark Cannon QC), Katherine Del Mar, London, ENGLAND

Katherine Del Mar

Work 020 7822 2000
4 New Square (Chambers of Mark Cannon QC)


Barrister at 4 New Square with a broad commercial law practice, with experience in professional negligence, banking and finance, European Union law, public law and public international law.


Called 2013; Lincoln’s Inn. Teaching assistant Geneva academy of international humanitarian law and human rights 2007-08; teaching and research assistant, faculty of law, University of Geneva Switzerland 2008-11; personal research assistant to Professor Marcelo Kohen, graduate institute of international and development studies, Switzerland 2008-11; visiting fellow Lauterpacht centre for international law, University of Cambridge 2011-12; advisor to the Republic of Serbia 2008-09; advisor, subsequently counsel, representing the Republic of Costa Rica 2010 to date.


French; Spanish; Portuguese.


Lincoln’s Inn Denning Society; Editorial Committe of the Journal of International Criminal Justice, Oxford University Press. Publications of note: ‘Integrity versus Flexibility in the Application of Treaties’, in: Christian J. Tams, Antonios Tzanakpoulos, and Andreas Zimmermann (eds), Research Handbook on the Law of Treaties, Edward Elgar Publishing; ‘Transitional Justice’, in: Andrew Clapham and Paola Gaeta (eds.), Oxford Handbook of International Law in Armed Conflict, Oxford University Press, 2014 (with Professor Nicolas Michel), p840-884; ‘Treaties for Armed Conflict’, in: Andrew Clapham and Paola Gaeta (eds.), Oxford Handbook of International Law in Armed Conflict, Oxford University Press, 2014 (with Professor Robert Kolb), p50-90; ‘Opérations de maintien de la paix et droit des conflits armés’, in: Vincent Chetail (ed.), Permanence et mutation du droit des conflits armés, Bruylant (with Professor Nicolas Michel), p185-200; ‘The Effects of Framing International Legal Norms as Rules or Exceptions: State Immunity from Civil Jurisdiction’, 15(2) International Community Law Review (2013), p143-170; ‘The Myth of Remedial Secession’, in: Duncan French (ed.), Statehood and Self-Determination. Reconciling Tradition and Modernity in International Law, Cambridge: Cambridge University Press (2013), p79-108; ‘Decolonisation in Latin America: Its Trail-Blazing Role for Decolonisation in other Parts of the World’, in: Claude Auroi and Aline Helg (eds), Latin America. Dreams and Legacy 1810-2010, Imperial College Press, 2012, p43-65 (with Professor Marcelo Kohen).


University of Queensland, Australia (2003 BA French and Spanish); Geneva Academy of International Humanitarian Law and Human Rights, Switzerland (2006 Juris Doctor; 2008 LLM); College of Law, London (2012 Graduate Dip in Law Commendation); City Law School, London (2013 Bar Professional Training Course Very Competent); Graduate Institute of International and Developmental Studies, Switzerland (2013 PhD International Law).

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