England - London • Dispute resolution

Gibson, Dunn & Crutcher

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Gibson, Dunn & Crutcher‘s ’first-rate public international law practice‘ is routinely sought out to act in heavyweight investment treaty claims. The team is jointly headed by Penny Madden KC, whose international arbitration  expertise covers shareholder, telecoms energy, international trade, and insurance disputes; and Cyrus Benson, who ’argues points of public international law with great skill‘. In late 2022, former President of the European Court of Human Rights, Robert Spano, joined the practice, while Piers Plumptre, who ’has wide experience in public international law issues‘, was elevated to partner. Former partner Jeffrey Sullivan KC joined Debevoise & Plimpton LLP in July 2023.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘The firm has wide experience in sovereign immunity, and has acted in many of the leading cases in this complex area.’

  • ‘Piers Plumptre has wide experience in public international law issues relating to the enforcement of judgments and awards, in particular sovereign immunity.’

  • ‘Gibson Dunn has a first-rate public international law practice.'

  • 'Has an excellent understanding of public laws issues, particularly within the context of international arbitration and investment disputes.’

  • ‘Cyrus Benson is rated very highly. He is an exceptional and highly intelligent lawyer who argues points of public international law with great skill.’

  • ‘Penny Madden KC is excellent - knowledgeable and committed.’

Key clients

  • Corral Morocco Holdings
  • Luxtona
  • Yukos Capital
  • Kimberly-Clark
  • Tethyan Copper Company
  • Global Telecom Holding

Practice head

The lawyer(s) leading their teams.

Penny Madden KC, Cyrus Benson

Other key lawyers

Lord Charles Falconer, Osma Hudda, Ceyda Knoebel, Piers Plumptre, Robert Spano