Genevieve Poirier

Stephen A. Thierbach is a US-qualified corporate partner in the London office of Gibson, Dunn & Crutcher. A senior U.S. securities lawyer, he advises issuers, underwriters and selling shareholders on complex, innovative and multi-jurisdictional offerings of equity, equity-related and debt securities. He has a broad capital markets transactions practice, with a focus on initial public offerings and secondary offerings, and has represented corporates, investment banks, private equity firms ...

Steven Cowins is a lawyer recognized by Best Lawyers in the practice area of Real Estate Law. Steven practices law in London, United Kingdom Best Lawyers has recognized Steven Cowins 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 Steven Cowins is held by other lawyers.

Graham Tyler leads the firm’s Asset Finance team globally. A recognised authority on aircraft finance and leasing, Graham regularly represents financial institutions, leasing companies, equity investors, airlines and arrangers in the procurement, financing and leasing of new and used aircraft and engines and aircraft portfolio acquisitions, financings and sales. Adept at crafting complex cross-border leasing and innovative financing structures, Graham negotiates commercial debt deals in...

Sandro de Bernardini is a lawyer recognized by Best Lawyers in the practice area of Mergers and Acquisitions Law. Sandro practices law in London, United Kingdom Best Lawyers has recognized Sandro de Bernardini 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 Sandro de Bernardini is held by other lawyers.

James Fisher is a partner in the Finance Group in Alston & Bird’s London office, focusing on debt capital markets, structured finance, securitisation, and derivatives transactions, with a particular specialty in advising corporate trust, agency, and issuer clients across a broad spectrum of cross-border and domestic financings.

Peter Castellon is a lawyer recognized by Best Lawyers in the practice area of Capital Markets Law. Peter practices law in London, United Kingdom Best Lawyers has recognized Peter Castellon since 2023. 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 Peter Castellon is held by other lawyers.

Rohan Massey is a lawyer recognized by Best Lawyers in the practice area of Privacy and Data Protection Law. Rohan practices law in London, United Kingdom Best Lawyers has recognized Rohan Massey 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 Rohan Massey is held by other lawyers.

Patrick Doris is a partner in Gibson Dunn’s Dispute Resolution Group in London, where he specialises in global white-collar investigations, commercial litigation and complex compliance advisory matters. Mr. Doris’ practice covers a wide range of disputes, including white-collar crime, internal and regulatory investigations, transnational litigation, class actions, contentious antitrust matters and administrative law challenges against governmental decision-making. Mr. Doris handle...

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...

Andrew Savage focuses his practice on international commercial and finance litigation and international arbitration. Over a period of more than 25 years he has a gained a wealth of experience across all sectors and industries, including finance, insolvency, energy, insurance (for policy holders), commodities, shipping, construction, IT and art theft. Much of his casework has involved dealing with issues of fraud and corruption and the need for global asset tracing and international enforcement.