Mark Chennells

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...

Mitasha Chandok is an experienced corporate associate in the London office of Gibson, Dunn & Crutcher. She is a member of the firm’s Oil and Gas, Energy and Infrastructure, Power and Renewables, Mergers and Acquisitions, and Private Equity practice groups and the Environmental, Social and Governance (ESG) practice. Mitasha’s experience includes mergers and acquisitions, joint ventures, project development and financing, and corporate advisory work. She routinely advises client...

Cathryn Williams is a top attorney recognized by Best Lawyers in the practice area(s) of Insolvency and Restructuring Law. Cathryn, who practices law in London, United Kingdom, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Cathryn is held by other top lawyers in the same geographic and legal practice area.

Claibourne S. Harrison is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Claibourne S., who practices law in London, United Kingdom, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Claibourne S. is held by other top lawyers in the same geographic and legal practice area.

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...

Sandro de Bernardini is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law. Sandro, who practices law in London, United Kingdom, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sandro is held by other top lawyers in the same geographic and legal practice area.

Christopher Hilditch is a top attorney recognized by Best Lawyers in the practice area(s) of Investment Funds. Christopher, who practices law in London, United Kingdom, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Christopher is held by other top lawyers in the same geographic and legal practice area.

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...

Carolyn Jackson helps clients solve complex cross-border issues involving the regulation of financial institutions and financial products, including derivatives. Carolyn's depth of knowledge and practical approach are shaped by her first-hand experience: she managed the New York trading desk of several investment banks and was formerly the executive director of the International Swaps and Derivatives Association, Inc. Trading firms, banks, asset managers, clearing houses and trading venues re...

Sharon Lamb focuses her practice on transactional and regulatory advice in the health and life sciences sector. Sharon advises on global transactional mandates, including mergers and acquisitions and joint ventures in health services, pharma and life sciences, digital health and health data technologies. Sharon also provides strategic, regulatory and commercial support to UK and international clients on UK health and life sciences with a focus on health services, pharmaceuticals, medical devi...