About Sean Brannigan KC
Sean Brannigan KC (formerly Sean Brannigan QC) is one of the leading construction and international arbitration silks of his generation. He practises from 4 Pump Court in London's Temple, where he served as Joint Head of Chambers until 2026. Called to the Bar of England and Wales and appointed King's Counsel, Sean Brannigan KC acts as an advocate in high-value disputes arising from major infrastructure and energy projects across the United Kingdom, the Middle East, and Asia-Pacific.
Sean Brannigan KC was named Lexology Index Global Construction Lawyer of the Year in both 2025 and 2026 — the only barrister to receive the award in consecutive years. He has been named Chambers & Partners Construction Silk of the Year (twice) and Legal 500 Projects & Energy Silk of the Year (twice), and is currently nominated for The Legal 500 International Arbitration Silk of the Year 2026–27. He is listed in the Chambers 100 — the top barristers in the UK across all practice areas — and is ranked as a Who's Who Legal Global Elite Thought Leader for Construction. His practice encompasses complex construction litigation in the Technology and Construction Court, international arbitration under ICC, LCIA, SIAC, DIAC, and ad hoc rules, energy and natural resources disputes, professional negligence claims, and building safety and cladding claims under the Building Safety Act 2022.