London Office

2-4 King Street
St James’s, London


Ouvert en 2018, le bureau de Londres de Cohen & Gresser offre des services juridiques à nos clients de part et d’autre de l’Atlantique. Le bureau londonien concentre son activité autour de l’investissement et conseille notamment des hedge funds, des structures de private equity et de prêt, des investisseurs, et des sociétés de gestion ; il intervient également lors de transactions, contentieux et enquêtes transfrontalières. Nos avocats du bureau de Londres travaillent en étroite collaboration avec leurs collègues des bureaux de New York et Paris, notamment sur des sujets transfrontaliers complexes.

Jeffrey M Bronheim qui dirige le bureau de Londres représente, depuis plus de 25 ans, des administrateurs de fonds, des hedge funds et autres véhicules d’investissement alternatif. Par ailleurs, Jeff a été impliqué lors de la première introduction en bourse au New York Stock Exchange d’un hedge fund manager. Ancien directeur juridique d’un gestionnaire d’actifs diversifié de renom, Jeff est membre des barreaux en Angleterre et à New York et a travaillé dans des sociétés de services financiers au Royaume-Unis, aux Etats-Unis et en Espagne.

Cohen & Gresser partners John W Gibson and Richard Kovalevsky KC have once again been recognized among the top lawyers for high net worth (HNW) individuals by Spear’s Wealth Management in their 2024 Legal Index, which identifies the top legal counsel for private clients in the UK.

John Gibson, head of Cohen & Gresser’s UK White Collar and Investigations Practice, is featured as a “Top Recommended” lawyer for Criminal Law and White Collar Crime in the 2024 index. He is commended by Spear’s for his “particular expertise with UK/US cooperation in economic crime investigation” and experience working with the U.S. Department of Justice and Federal Bureau of Investigation. With almost three decades of litigation and advisory experience, including five years as a senior prosecutor in the bribery and corruption unit of the UK’s Serious Fraud Office (SFO), John’s practice at Cohen & Gresser focuses on complex economic crime, investigations, and regulatory matters in the UK, Europe and emerging markets.

Richard Kovalevsky KC has maintained his long-standing status as a “Top Recommended” lawyer in the Spear’s Hommes d’Affaires category. Richard is the head of the Criminal Defense Practice for Cohen & Gresser’s London office, specializing in advising and representing HNW individuals in connection with international and domestic legal matters. Spear’s states, “What’s noteworthy is the wide range of cases that come across Kovalevsky’s desk – from cases involving business, finance, stock market dealings, listings and announcements, to corruption, tax, fraud and money laundering.” The index similarly praises Richard for his wide-ranging client base, which includes global business leaders and high-profile politicians to HNW individuals and members of prominent families.

John and Richard and their UK colleagues work closely with attorneys in Cohen & Gresser’s U.S. and Paris offices on complex multi-jurisdictional matters and offer a multi-disciplinary practice tailored to the needs of ultra-high and high-net-worth individuals and family offices. Leveraging decades of experience, including at premier investment houses, the Bar, and the top tier of elite global law firms, Cohen & Gresser delivers consistent, high-quality service across the types of matters our clients are likely to face, including fund investing and structure, strategic transactions, art law and restitution, privacy and data security, employment matters, tax issues, regulatory considerations, commercial disputes, reputation management, and, when necessary, defense against litigation, investigation, and prosecution.

In a private equity article published in Law360, Daniel Mathias discusses flexible and hybrid capital investment strategies, which have become a solution for business owners considering capital fundraising but whose plans may not fit into the typical private equity or private credit options. He examines the features and nuances of flexible capital investments, which potentially offer numerous benefits for some.

In his first speech as Director of the UK Serious Fraud Office, Nick Ephgrave last month expressed provisional support for financial incentives to whistleblowers in cases alleging significant economic crime. This marks a strategic shift as he seeks new approaches to expedite investigations and prosecutions.

In this Client Alert, John Gibson, Thomas Shortland, and Ashley Collins explore the divergent approaches to whistleblower payment schemes in the UK and the U.S. and shed light on the challenges and opportunities faced in this area by the current Director of the SFO.

The 2024 edition of The Legal 500 UK Solicitors guide has recognized Cohen & Gresser’s London office for excellence in Commercial Litigation and two White-Collar Crime and Defense categories: Fraud: White-Collar Crime (Advice to Individuals) and Regulatory Investigations and Corporate Crime (Advice to Corporates).

Richard Kovalevsky KC received recognition as a Leading Individual in the Regulatory Investigations and Corporate Crime (Advice to Corporates) category, and Thomas Shortland is recognized as a Next Generation Partner in the Commercial Litigation: Mid-Market category. Additionally, John Gibson, Sir David Green CB KC, Ashley Collins, Patrick Ferguson, and Charlotte Ritchie are recognized as recommended lawyers.

Testimonials included in the tables praise the London team as “brilliantly innovative,” “top of the league,” and “standout stars in every way.” Client feedback also highlighted the team’s relentless persistence: “They will work unflaggingly and constantly until they have left no stone unturned and no potentially winning avenue unexplored.”

Opened in 2018, Cohen & Gresser’s London office provides legal services to clients around the world in a variety of disciplines. The office works closely across practices with colleagues in New York, Paris, and Washington, D.C., providing seamless support on sophisticated cross-border matters.

The Legal 500 UK Solicitors reflects the best lawyers and law firms in the UK following extensive research, interviews, and analysis of tens of thousands of submissions.

The 2024 Chambers UK guide has ranked Cohen & Gresser’s Richard Kovalevsky KC in both the Financial Crime: Individuals and Financial Crime: Corporates categories. Richard won high praise for client advocacy, with standout testimonials lauding him for his “brilliant strategy,” “good business judgment,” and “thorough analytical skills.” He also received top ranking in the Chambers High Net Worth guide earlier this year.

Published by Chambers & Partners, the 2024 Chambers UK guide ranks the legal market’s best law firms and lawyers in numerous areas of UK law based on thorough independent research, including thousands of client interviews.

For the fifth consecutive year, international law firm Cohen & Gresser has been ranked in Global Investigations Review’s GIR 100 as one of the top law firms for cross-border investigations.

The GIR 100, a guide to the world’s best firms for investigations, recognized C&G for its work on behalf of high-profile individuals and companies and its strong network of prominent lawyers in key jurisdictions around the globe. The annual guide is based on submissions from law firms and extensive independent research, and honors the top 100 firms worldwide that handle sophisticated government-led, internal, and cross-border investigations.

C&G’s White Collar Defense and Regulation practice spans its New York, Washington, D.C., Paris, and London offices. The practice’s highly experienced Internal Investigations team works closely with global clients, including corporations, boards of directors, special committees, and audit committees, in connection with investigations of all sizes. The team’s work has ranged from discrete investigations in response to an anonymous employee complaint to wide-ranging investigations conducted against the backdrop of ongoing litigation and/or regulatory and criminal investigations.

Cohen & Gresser represented Sierra Holding Corporation, the primary parent of Sierra Space Corporation, a commercial space company that is building and delivering the infrastructure and systems required for the future of space travel, in its $290 million Series B financing round. The firm represented Sierra Space in its record-breaking $1.4 billion Series A financing in November 2021.

This latest financing brings Sierra Space’s total capital raised to $1.7 billion, which is the largest ever capital raise by a commercial space company and brings Sierra Space’s valuation to $5.3 billion.

MUFG, Japan’s largest bank, trading company Kanematsu Corporation, and Tokio Marine & Nichido Fire Insurance, Japan’s largest property and casualty insurer, led the Series B round, which also included participation from Sierra Space’s existing investors, including General Atlantic, Coatue, Moore Strategic Ventures, and funds and accounts managed by BlackRock Private Equity Partners and others.

Cohen & Gresser served as counsel to our client Sierra Holding on all aspects of the transaction. “We are proud of the opportunity to assist Sierra Holding in this follow-on transaction to support the future of space travel,” said Jeffrey M. Bronheim, lead partner on the engagement for Cohen & Gresser.

The Cohen & Gresser team was led by Jeffrey M. Bronheim, Daniel H. Mathias, and Bonnie J. Roe, with assistance from associate Myia Williams.

Read Sierra Space Corporation’s press release here.

The 2023 Chambers High Net Worth guide awarded high rankings to Cohen & Gresser’s White Collar Defense and Regulation group, which earned a Band 3 ranking for Financial Crime: High Net Worth Individuals. The firm is one of only 18 ranked in this category throughout the UK.

Two partners were individually ranked for their leading work for HNW clients:

High Praise for Client Service and Sophisticated Work

Chambers highlights C&G’s strength in representing affluent clients in a “diverse range of complex work,” including “high-stakes tax and fraud-related investigations.” The team’s sanctions-related matters “stand out as sophisticated examples of cross-border work” and demonstrate its extensive capabilities in this space. Client feedback consistently praises the firm’s “attentive service,” specifically noting that, “with Cohen & Gresser, the client always comes first.” The members of the team are “all insightful and exceptional,” clients praised.

Richard Kovalevsky KC is lauded for his “commendable breadth of expertise” in work for affluent individuals and families facing allegations of fraud or facing tax investigations. He is “extremely dedicated to clients, hard-working and knows his subject matter inside out,” clients note. 

John Gibson is recognized for expertly navigating “financial crime matters of high complexity.” Chambers spotlights his work for high-profile clients and his “involvement on high-value, cross-border mandates.” Clients praised him for being “extremely thoughtful, careful and assertive" and for bringing “new ideas” to matters.

Since opening in 2018, C&G’s London office has built a roster of distinguished lawyers, including some of the UK’s most respected former prosecutors. Led by four highly regarded lawyers from the Bar, C&G’s London White Collar and Criminal Defense practice offers extensive experience and full-service capabilities tailored to meet the particular issues of high net worth individuals.

About Chambers High Net Worth

Published by Chambers & Partners, the 2023 Chambers High Net Worth guide ranks the leading lawyers and law firms for international private wealth. The guide is used by family offices and professional advisers to wealthy individuals, providing objective guidance on an international scale. According to Chambers, “Those ranked in the guide understand the complex needs of HNW individuals and provide specialist advice.”

View All

General Inquiries

Managing Partner

Daniel H Mathias

2-4 King Street
St James’s, London

+44 (0) 20 8037 2330 phone