Guernica 37 Members

Members of Guernica 37 Chambers are experienced Barristers and international attorneys specialised in international law. Chambers primarily operates from its office in Central London with associated offices in The Hague, Madrid and San Francisco.

Toby Cadman


Toby is the Co-founder and Head of Guernica 37 International Justice Chambers in London. 

Almudena Bernabeu


Almudena Bernabeu is a renowned international lawyer with a long career in Transitional Justice and International Criminal and Human Rights Law.

Carl Buckley


Carl is a member of the Bar of England and Wales and prior to qualifying as a Barrister was a Solicitor specialising in crime and public international law.


Sir Howard Morrison QC


Sir Howard is a British lawyer with extensive experience in the field of international law and, particularly, international criminal and humanitarian law, having served as a judge at the International Criminal Tribunal for the former Yugoslavia

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Mark Hambling


Mark is a member of the Bar of England and Wales and prior to qualifying as a Barrister, Mark was the Deputy Head of Interpol UK.

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Najib Rahman


Najib is a member of the Bar of England and Wales. Prior to qualifying as a Barrister  he practised in Bangladesh as advocate and  worked for six years as a case manager with the defence at the International Crimes Tribunal,  Bangladesh. 


Ibrahim Olabi


Ibrahim is a member of the Bar of England and Wales, having completed pupillage in Chambers in 2019. He has developed specialist knowledge and experience in international law, currently applying it to the Middle East and North Africa.

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Omar Soliman


Omar became a Guernica 37 member, following successful completion of his pupillage in September 2020. He is developing a practice across a spectrum of chambers’ practice areas, with a particular focus in international human rights, extradition, international crime and immigration.


Miriam Boxberg


Miriam is a Barrister based in London and The Hague and practices in public international law, international criminal law and human rights law.

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Howard Varney


Howard is a South African barrister practicing at the Johannesburg Bar.  His legal practice comprises human rights, constitutional and administrative law cases. 


Monica Roma Wilson


Mónica is a Portuguese-British attorney.  She has lived and worked in Lisbon, Brussels, London, Islamabad, Beijing, New York and The Hague.

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John Cubbon


John Cubbon joined Guernica 37 International Justice Chambers in 2021. He is an international lawyer with many years’ experience of criminal justice issues arising in fragile and conflict-affected states.

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Lucia Brieskova


Lucia is a member of the Bar of England and Wales and joined Chambers in June 2021. She accepts instructions in all Chambers’ practice areas, including criminal law, extradition, international law, EU law and human rights law.


Shannon Raj Singh


Shannon is an American attorney specialized in international criminal law, the intersection of technology and human rights, and the prevention of mass atrocities.


Jack Sproson

Pupil Barrister

Prior to commencing pupillage, Jack spent 3-months interning with Guernica 37’s Academy Internship Programme, as part of which he assisted with a variety of domestic and international work.