Ms Penny Madden KC KC > Gibson, Dunn & Crutcher > London, England > Lawyer Profile
Gibson, Dunn & Crutcher Offices

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Ms Penny Madden KC KC

Work Department
International Arbitration, Transnational Litigation
Position
Penny Madden is an English qualified King’s counsel and serves as co-partner in charge of the London office at Gibson, Dunn & Crutcher. She is co-chair of the International Arbitration Practice Group and a member of the firm’s Transnational Litigation Practice Group.
She has a wide range of experience in all key aspects of international arbitration with particular expertise in shareholder, telecommunications, SPA, energy, international trade and insurance disputes. She represents clients across the globe in a wide variety of arbitration proceedings, including those before the London Court of International Arbitration (LCIA), International Chamber of Commerce (ICC), United Nations Commission on International Trade Law (UNCITRAL), International Centre for Settlement of Investment Disputes (ICSID), Permanent Court of Arbitration in The Hague (PCA) Singapore International Arbitration Centre (SIAC), Hong Kong International Arbitration Centre (HKIAC) and London Maritime Arbitrators Association (LMAA), as well as in ad hoc proceedings. In addition to representing clients as counsel, Penny regularly sits as an arbitrator.
Her recent cases include representing two Middle Eastern oil and gas companies in multiple LCIA arbitrations arising out of a multi-billion oil and gas project in Kurdistan and disputed gas pipeline; representing a Middle Eastern oil and gas company in a multi-billion PCA administered arbitration against a state owned Middle East oil and gas company in a gas sales and pipe-line infrastructure project dispute; representing a telecommunications corporate in its US$17 billion dollar UNCITRAL investment treaty arbitration against a North African state for creeping expropriation and breach of the fair and equitable treatment standard; and representing shareholders in a major oil company with respect to multibillion dollar claims for expropriation under the Energy Charter Treaty against the Russian Federation.
Memberships
She is a member of the LCIA, CIArb, the Financial Sector Arbitration Group and the editorial board of Commercial Dispute Resolution. She writes and lectures on a wide variety of arbitration issues and is the international arbitration specialist for the Diplomatic Book and Website for foreign Embassies and High Commissions
Lawyer Rankings
London > Dispute resolution > Public international law
The ‘very strong public international law practice’ at Gibson, Dunn & Crutcher has notable sector experience in the energy, telecoms, insurance, construction, pharmaceutical and banking sectors. The practice is co-led by international arbitration specialist Cyrus Benson, who is a ‘first-rate lawyer and advocate’; and the ‘outstandingly energetic and tireless’ Penny Madden KC, who has significant expertise in shareholder, telecoms, energy, international trade and insurance disputes. The practice further showcases former President of the European Court of Human Rights, Robert Spano; Piers Plumptre, who has significant investment treaty arbitration experience; and ‘excellent public international law practitioner’ Ceyda Knoebel.
London > Dispute resolution > International arbitration
(Leading partners)Gibson, Dunn & Crutcher fields ‘excellent lawyers, who are experienced and accomplished in running large, complex international arbitrations’. The practice has significant experience in disputes in the energy, telecoms, insurance, construction, pharmaceutical and banking sectors. Praised for his ‘ability to navigate complex facts and legal arguments’, Cyrus Benson routinely acts before commercial and investment treaty tribunals in high stakes matters. Penny Madden KC has particular expertise in shareholder, telecoms, energy, international trade and insurance disputes. The London office also showcases former UK Lord Chancellor Lord Falconer KC, who is a specialist in both international arbitration and commercial litigation. Osma Hudda is an expert in insurance and reinsurance claims, financial services disputes, and conflicts arising out of oil industry divestments and delivery contracts. Other key team members include former President of the European Court of Human Rights Robert Spano, Doug Watson, who conducts arbitrations under a broad range of rules and arbitral institutions, and Piers Plumptre, who has ‘vast amounts of work and new cases’. Other key lawyers are commercial and investment treaty arbitration practitioners Ceyda Knoebel and Stephanie Collins, and Cassie Aprile, who is ‘able to lead and advocate on the most complicated matters’.
Lawyer Rankings
- Leading partners London > Dispute resolution > International arbitration
- International arbitration London > Dispute resolution
- Public international law London > Dispute resolution
Top Tier Firm Rankings
- Projects, energy and natural resources > Infrastructure: Project finance and development
- Finance > Transport finance and leasing
Firm Rankings
- Real estate > Commercial property: investment
- Dispute resolution > International arbitration
- Real estate > Property finance
- Corporate and commercial > VAT and indirect tax
- Corporate and commercial > Corporate tax
- Corporate and commercial > Equity capital markets – mid-large cap
- Risk advisory > ESG
- TMT (technology, media and telecoms) > Fintech: regulatory
- Projects, energy and natural resources > Infrastructure: M&A and acquisition financing
- TMT (technology, media and telecoms) > IT and telecoms
- Projects, energy and natural resources > Oil and gas
- Dispute resolution > Public international law
- Risk advisory > Regulatory investigations and corporate crime (advice to corporates)
- Industry focus > TMT
- TMT (technology, media and telecoms) > Artificial intelligence
- Dispute resolution > Commercial litigation: premium
- Dispute resolution > Competition litigation
- Corporate and commercial > EU and competition
- Corporate and commercial > M&A: Upper Mid-Market And Premium Deals, £750m+
- Projects, energy and natural resources > Power (including electricity and nuclear)
- Corporate and commercial > Private equity: transactions – high-value deals (£500m+)
- Public sector > Administrative and public law
- Dispute resolution > Banking litigation: investment and retail
- Corporate and commercial > Financial services: non-contentious/regulatory
- Projects, energy and natural resources > Renewables
- Risk advisory > Data protection, privacy and cybersecurity
- Employment > Employers
- Corporate and commercial > Venture capital
- Finance > Corporate restructuring & insolvency