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.
Visiting Twenty Essex: Our London premises welcome guests at No 23 Essex Street. Step-free access is available via Milford Lane, with elevator access to all floors in No 23.
Singapore office: For client enquiries please contact our Head of BD, Asia Pacific, Katie-Beth Jones, and for all other queries please contact Lynn Quek. Out-of-office-hours calls will automatically be diverted to our practice management team in London.
28 Maxwell Road
#02-03 Maxwell Chambers Suites
Singapore 069120
[email protected]
t: +65 62257230
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.
Visiting Twenty Essex: Our London premises welcome guests at No 23 Essex Street. Step-free access is available via Milford Lane, with elevator access to all floors in No 23.
Singapore office: For client enquiries please contact our Head of BD, Asia Pacific, Katie-Beth Jones, and for all other queries please contact Lynn Quek. Out-of-office-hours calls will automatically be diverted to our practice management team in London.
28 Maxwell Road
#02-03 Maxwell Chambers Suites
Singapore 069120
[email protected]
t: +65 62257230
A number of Twenty Essex barristers represented state parties in the ICJ proceedings, which concluded with the publication today (23 July 2025) of the court’s opinion.
The proceedings, instigated by a request from the UN General Assembly in March 2023, saw more than 90 initial written submissions and nearly 100 states participate in a two-week hearing in The Hague in December 2024, alongside around a dozen international organisations.
– Download the ICJ advisory opinion | summary | press release
Opinions on international climate change obligations have also been given by the International Tribunal on the Law of Sea (ITLOS) in May 2024, and the Inter-American Court of Human Rights (CIDH) earlier in July 2025.
Twenty Essex barristers who acted or advised in the ICJ proceedings include: