Lisa O'Neill

Cason Moore is a lawyer recognized by Best Lawyers in the practice areas of Mergers and Acquisitions Law and Private Equity Law. Cason practices law in London, United Kingdom Best Lawyers has recognized Cason Moore since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Cason Moore is held by other lawyers.

John McElroy is a lawyer recognized by Best Lawyers in the practice area of International Arbitration. John practices law in London, United Kingdom Best Lawyers has recognized John McElroy since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which John McElroy is held by other lawyers.

Penny Madden is an English qualified Queen’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 repres...

??Philip Rocher is the senior partner in the Dispute Resolution Group in Gibson, Dunn & Crutcher’s London office. He specialises in litigation, often with an international element, and regulatory and internal investigations. He has extensive experience in the financial services sectors. Mr. Rocher regularly advises on high value disputes arising from the full range of commercial activities and has taken many large and complex matters through to a concluded trial. In recent years he ...

Eleanor West advises clients on UK and international private equity investments and buyout transactions, acting for institutions and management teams. Eleanor also advises corporate clients on cross-border merger and acquisition, joint venture and restructuring matters.

Ingrid Gubbay is a lawyer recognized by Best Lawyers in the practice area of Environmental Law. Ingrid practices law in London, United Kingdom Best Lawyers has recognized Ingrid Gubbay since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Ingrid Gubbay is held by other lawyers.

Kalyan "Kal" Das is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law. Kalyan, who practices law in New York, New York, has been recognized since 2027. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Kalyan is held by other top lawyers in the same geographic and legal practice area. Kal Das focuses on global bank and institutional finance, structured finance, project finance, asset securitization, di...

Ceyda Knoebel is an English-Turkish dual-qualified solicitor and Of Counsel in the London office of Gibson, Dunn & Crutcher. She is a member of the firm’s Dispute Resolution and International Arbitration Groups. Ms. Knoebel advises on a wide range of disputes involving public international law and general commercial matters in common and civil law jurisdictions. She has experience in both commercial and investment treaty arbitration proceedings under the UNCITRAL, ICSID, ICC, VIAC a...

Pawel Szaja is a lawyer recognized by Best Lawyers in the practice area of Capital Markets Law. Pawel practices law in London, United Kingdom Best Lawyers has recognized Pawel Szaja since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Pawel Szaja is held by other lawyers.

Mark Fennessy is the co-head of the London Finance, Restructuring and Special Situations Group. He focuses his practice on contentious and non-contentious restructuring and insolvency matters. He has particular experience in multifaceted group collapses and global insolvency issues. He has been involved in a number of high-profile assignments for banks, funds and various strategic parties. Mark leads a team with unrivalled expertise in special situations, including in relation to assets facin...