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Contact with chambers should be made through the Practice Management Team. They are happy to discuss client requirements and provide further information on such matters as the expertise and experience of individual members, fees, working practices and languages spoken. We have members able to work in French, German, Italian, Spanish, Dutch, Swedish, Greek and Chinese (Mandarin).

Outside working hours, a member of our team is always available to be contacted on matters of an urgent nature. Contact should be made using the Chambers main number or email.

To contact our Singapore office, please contact our BD Director, Asia, Rachel Foxton. Out of office hours calls will automatically be diverted to our clerking team in London.

London

Twenty Essex
London
WC2R 3AL

enquiries@twentyessex.com
t: +44 20 7842 1200
DX 0009 Lond/Chan Lane

Singapore

28 Maxwell Road
#02-03
Maxwell Chambers Suites
Singapore 069120

singapore@twentyessex.com
t: +65 62257230

Contact

Contact with chambers should be made through the Practice Management Team. They are happy to discuss client requirements and provide further information on such matters as the expertise and experience of individual members, fees, working practices and languages spoken. We have members able to work in French, German, Italian, Spanish, Dutch, Swedish, Greek and Chinese (Mandarin).

Outside working hours, a member of our team is always available to be contacted on matters of an urgent nature. Contact should be made using the Chambers main number or email.

To contact our Singapore office, please contact our BD Director, Asia, Rachel Foxton. Out of office hours calls will automatically be diverted to our clerking team in London.

London

Twenty Essex
London
WC2R 3AL

enquiries@twentyessex.com
t: +44 20 7842 1200
DX 0009 Lond/Chan Lane

Singapore

28 Maxwell Road
#02-03
Maxwell Chambers Suites
Singapore 069120

singapore@twentyessex.com
t: +65 62257230

Guglielmo Verdirame QC

Guglielmo Verdirame QC

Silk: 2019 Call: 2006

Languages: Italian (native proficiency); French and German (limited professional proficiency); Modern Hebrew (elementary proficiency)

Guglielmo Verdirame QC, has been in practice at the English Bar since 2006. His practice covers public international law and international arbitration (especially investment treaty arbitration and inter-state arbitration).

He is recognised as one of the leading practitioners in these fields by the main legal directories. He is regularly instructed as counsel in cases before English courts; international courts (including the International Court of Justice and the International Tribunal for the Law for the Law of the Sea); and arbitral tribunals (ICSID, ICSID-Additional Facility, PCA, UNCITRAL, ICC, SCC, LCIA, Court of Arbitration for Sport). While he mainly works as counsel, he has also occasionally sat as arbitrator.

He was appointed Queen’s Counsel (QC) in 2019. Until taking silk, Guglielmo sat as a member of the UK Attorney General’s A Panel of Counsel in Public International Law. He has appeared for the UK Government before the International Court of Justice (ICJ), UK Supreme Court and Court of Appeal in some of the leading PIL disputes.

For many years, Guglielmo combined his professional career at the Bar with academia. He is still Professor of International Law at King’s College London, albeit only on a part-time basis. In past, he was a Fellow of the Lauterpacht Centre for International Law at the University of Cambridge (2003-2011), and a Fellow of Merton College, Oxford (2000-2003). He was a Visiting Professorial Fellow at Harvard Law School (2006) and a Visiting Professor at Columbia Law School (2015). He has published extensively in the field of public international law, and currently sits on the Advisory Board of the American Review of International Arbitration.

 

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A decisive thinker who is focused in his oral contributions and effective on paper. He has a thoughtful approach that gives clients great confidence.

Chambers UK Bar 2022

Beautifully prepared, and leaves no stone unturned: novel areas and arguments don't faze him. He relishes a fight on uncertain ground and delivers brilliantly. A class act.

The Legal 500 UK Bar 2022

He's knowledgeable and thoughtful.

Chambers UK Bar 2022

Extremely erudite, very reliable and a real expert." "A very deep thinker with a deep understanding of PIL.

Chambers UK Bar 2021

Top of the list for public international law. Very strong and highly knowledgable in international issues.

The Legal 500 UK Bar 2021

A very talented international lawyer.

Chambers UK Bar 2020

Has excellent technical detailed knowledge of public international law, and is a superb advocate.

The Legal 500 UK Bar 2020

Extremely thorough, a pleasure to work with and has excellent knowledge of PIL issues.

Chambers UK Bar 2020

Particularly good in the practical application of PIL in novel commercial situations.

The Legal 500 UK Bar 2018

An excellent team player with acute insight, who has a very easy working manner.

Chambers UK Bar 2019

He has a deep intellectual knowledge, is very interested in BIT arbitration and is experienced in state-on-state matters.

Chambers UK Bar 2018

Very impressive and very highly regarded.

The Legal 500 UK Bar 2017

He's excellent and very well versed in PIL.

Chambers UK Bar 2017

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