Ian Williams

Trevor has over 30 years of experience in providing corporate and international tax advice. His practice focuses on advising client on the tax planning aspects of international transactions and strategic tax planning for global clients. He has particular experience in advising clients in the technology sector and IP-rich companies.Trevor has also advised clients on the design and implementation of global private equity and investment funds, including advising executive teams on the structurin...

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.

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...

Geoffrey L. Wynne is head of the Trade and Commodities Finance Group and has extensive experience in banking and finance, specifically corporate and international finance, bank mergers, acquisitions, conversions and restructurings, trade and structured trade and commodity finance, structured finance, asset and project finance, syndicated lending, equipment leasing, workouts and financing restructuring, leveraged and management buy-outs and general commercial matters. Geoff is one of the leadi...

Niri Shanmuganathan is a lawyer recognized by Best Lawyers in the practice areas of Defamation Law and Media and Entertainment Law. Niri practices law in London, United Kingdom Best Lawyers has recognized Niri Shanmuganathan since 2009. 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 Niri Shanmuganathan is held by other lawyers.

Peter Coulton is a lawyer recognized by Best Lawyers in the practice area of Banking and Finance Law. Peter practices law in London, United Kingdom Best Lawyers has recognized Peter Coulton 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 Peter Coulton is held by other lawyers.

Rob Day is a partner in Proskauer’s Corporate Department and a member of our Private Equity Transactions, Mergers & Acquisitions and Sports Groups. Rob’s practice focuses on public and private M&A, leveraged buyouts and joint ventures, private equity and portfolio company transactions. His clients include global corporations, asset managers and private equity houses, advising on their strategically important transactions across financial services, consumer, sports, media a...

Mark's practice covers cross border inward investment, syndicated lending, structured export credit finance, structured trade and commodity finance, debt restructurings and asset finance. Mark is recognized in The Legal 500 UK as "excelling" in structured export credit transactions and is praised for his "commercial and user-friendly approach."Mark advises on ESG financings including hospitals, clean energy and transportation.Mark also advises on financial crime, modern slavery, bribery and c...

Christopher Thornham is a lawyer recognized by Best Lawyers in the practice area of Intellectual Property Law. Christopher practices law in London, United Kingdom Best Lawyers has recognized Christopher Thornham since 2020. 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 Christopher Thornham is held by other lawyers.

Joel D. Harrison is a lawyer recognized by Best Lawyers in the practice areas of Information Technology Law and Outsourcing. Joel D. practices law in London, United Kingdom Best Lawyers has recognized Joel D. Harrison since 2022. 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 Joel D. Harrison is held by other lawyers.