header-logo header-logo

03 September 2025
Categories: Movers & Shakers , Profession
printer mail-detail

Twenty Essex—Professor Payam Akhavan

Chambers deepens international law bench with leading global advocate

Twenty Essex has welcomed Professor Payam Akhavan to its London chambers, marking a significant addition to its public international law practice. Akhavan joins as a barrister, bringing over 35 years of experience across the world’s foremost legal forums, including the International Court of Justice, the International Criminal Court, and the Supreme Courts of the US and Canada.

Akhavan has acted in more than 30 sovereign disputes and represented numerous states, heads of government, and international commissions. His work spans the full spectrum of international law, with recent roles including counsel to the Commission of Small Island States on Climate Change and International Law. Co-heads of chambers Philip Edey KC and Charles Kimmins KC described him as ‘a renowned advocate and international lawyer’ and said his arrival ‘further strengthens our proud tradition in public international law’.

Alongside his legal practice, Akhavan is a respected academic and currently serves as Senior Fellow and inaugural Chair in Human Rights at Massey College, University of Toronto. His previous appointments include professorships and visiting roles at McGill University, Oxford, Yale, and Sciences Po, among others. He has published widely on human rights and international criminal law and sits on the editorial board of Human Rights Quarterly.

Commenting on his appointment, Akhavan said: ‘I am honoured to join Twenty Essex, with its exceptional legacy of eminent international jurists… navigating this complex landscape requires brilliant minds and sound judgment, which are abundant at Twenty Essex.’ His practice will be managed through the chambers’ London team, complementing his calls to the Bar in England and Wales, New York, and Ontario.

MOVERS & SHAKERS

Clarke Willmott—Matthew Roach

Clarke Willmott—Matthew Roach

Partner joins commercial property team in Taunton office

Farrer & Co—Richard Lane

Farrer & Co—Richard Lane

Londstanding London firm appoints new senior partner

Bird & Bird—Sue McLean

Bird & Bird—Sue McLean

Commercial team in London welcomes technology specialist as partner

NEWS
The legal profession’s claim to be a ‘guardian of fairness’ is under scrutiny after stark findings on gender imbalance and opaque progression. Writing in NLJ this week, Joshua Purser of No5 Barristers’ Chambers and Govindi Deerasinghe of Global 50/50 warn that leadership remains dominated by a narrow elite, with men holding 71% of top court roles
A legal challenge to police disclosure rules has failed, reinforcing a push for transparency in policing. In NLJ this week, Neil Parpworth examines a case where the Metropolitan Police required officers to declare membership of groups like the Freemasons
Bereavement leave is undergoing a quiet but profound transformation. Writing in NLJ this week, Robert Hargreaves of York St John University explains how the Employment Rights Act 2025 introduces a day-one right to leave for a wider range of losses, alongside new provisions for pregnancy loss and bereaved partners
Courts are beginning to grapple with whether AI-generated material is legally privileged—and the answers are mixed. In this week's issue of NLJ, Stacie Bourton, Tom Whittaker & Beata Kolodziej of Burges Salmon examine US rulings showing how easily privilege can be lost
New guidance seeks to bring order to the growing use of artificial intelligence (AI) in expert evidence. Writing in NLJ this week, Minesh Tanna and David Bridge of Simmons & Simmons set out a framework stressing ‘transparency’, ‘explainability’ and ‘reliability’
back-to-top-scroll