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Katherine O'Byrne

Year of call:

Katie specialises in international law, human rights and extradition.  She has a strong background in international criminal law, having worked as an assistant legal officer at the International Criminal Tribunal for the former Yugoslavia in the case of Prosecutor v Radovan Karadzic.  

Katie assisted Sir Keir Starmer QC representing Croatia in the case of Croatia v Serbia under the Genocide Convention before the International Court of Justice.  Katie has experience in international human rights law, particularly regarding the rights of detainees.  She is junior counsel to Amal Clooney representing the former President of the Philippines before the UN Human Rights Committee and the Working Group on Arbitrary Detention, and has worked with John Jones QC representing Charles Taylor before the Residual Special Tribunal for Sierra Leone.  She has also assisted Kirsty Brimelow QC in collating evidence to be presented to the UN of sexual violence against Tamil men and women in Sri Lanka.  Katie is frequently instructed in extradition proceedings and has successfully opposed extradition in a number of High Court appeals on the right to family life under Article 8 ECHR.  As a lawyer in Australia, Katie worked on several landmark challenges to Australia's refugee processing policies, both as a refugee advocate and as an associate to Justice Kenneth Hayne AC of the High Court of Australia.  Katie was a lecturer in the Juris Doctor program at the University of Melbourne Law School and has run courses on international humanitarian law for the Red Cross.  She is the author and editor of a number of books, chapters and articles in the areas of international criminal law, international humanitarian law, children's rights and refugee law, the most recent being a collection of essays entitled Surrogacy, Law and Human Rights (Ashgate Press) which examines the human rights ramifications of domestic and international surrogacy regulation.  She holds a first-class Masters degree in law from the University of Cambridge and sits on the board of the Commonwealth Human Rights Initiative.

Regional expertise


Venue: Doughty Street Chambers, 54 Doughty Street, London WC1N 2LS
Venue: Doughty Street Chambers, 53-54 Doughty Street, London WC1N 2LS