Daniel Isenberg

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Practice Areas

Daniel Isenberg practises in all areas of public, commercial, employment and data protection litigation, with a particular focus on cases with an international element. In the commercial and employment field his practice is broad, with a focus on litigation involving breach of fiduciary and directors’ duties, economic tort claims, team moves, restrictive covenants, misuse of confidential information, civil fraud, and bonus and contractual disputes. He has particular experience of claims involving assertions of state immunity. Daniel is regularly instructed in public law and human rights matters relating to national security and defence, given his professional background in the area. He acted for the Government in the Bank Mellat sanctions litigation and his ongoing work includes an Article 2 challenge to the ban on the admissibility of intercept evidence. He also acts in high profile data protection claims, including for British Airways in the group litigation following the cyber-attack on its systems in 2018.


Called to the Bar 2015. Judicial Assistant to Lord Sumption & Lord Carnwath, UK Supreme Court 2016-2017.

Member of the Attorney General’s C Panel of Counsel and the Equality and Human Rights Commission’s C Panel of Counsel.

Prior to becoming a barrister Daniel spent two years as a desk officer in the fast-stream at the Ministry of Defence, working on various national and international security matters.

Professional Memberships



Educated at Pembroke College, Cambridge (double first class degree in History), Harvard University (LLM, Frank Knox Memorial Fellow) and City University (GDL, Distinction, ranked first in the year).