London Office

2-4 King Street
St James’s, London


Opened in 2018, Cohen & Gresser’s London office provides legal services to clients around the world. The London office represents investment managers, financial institutions, global companies, family offices, and individuals in a variety of disciplines. On the transactional side, we represent clients in all aspects of investing and investments, restructurings, and divestitures. The UK commercial litigation team advises on a wide range of cross-border disputes, and are well-versed in funds, financial services, and insurance litigation in a number of jurisdictions, including offshore jurisdictions. Our UK white collar defense and investigations team represents entities and individuals in complex economic crime, investigations, and regulatory matters. The London office works closely across practices with colleagues in New York and Paris, providing seamless support on sophisticated cross-border matters.

Partner Daniel H Mathias leads the London office and has extensive experience advising private equity firms, owners, family offices, growth equity funds, and other alternative asset managers on their investments and divestments. Having worked in London, Washington D.C., Los Angeles, and Hong Kong, Daniel has significant international transactional experience and often works with U.S.-based clients on domestic and major cross-border transactions.


Legal Notice (UK) / Website Disclosure

International law firm Cohen & Gresser represented 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 record-breaking $1.4 billion Series A financing round. The private funding round represents the largest aerospace and defense capital raise in the world in 2021 and the second-largest private capital raise of all time in the aerospace and defense sector. Leading global investors including General Atlantic, Coatue, and Moore Strategic Ventures, along with private equity funds managed by firms including Black Rock and AE Industrial Partners and various family offices, all participated in the transaction. Cohen & Gresser served as counsel to our client Sierra Space on all aspects of the transaction. “We are proud of the opportunity to assist Sierra Space in this groundbreaking 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, Bonnie J. Roe, and Daniel H. Mathias, with assistance from associates Winnifred A Lewis and Georgia Moorhouse. C&G partners Nicholas J. Kaiser (tax), Ronald F. Wick (antitrust), and David F. Lisner (litigation) provided additional support. Read Sierra Space Corporation’s press release here.
International law firm Cohen & Gresser has once again been ranked by Global Investigations Review (GIR) as one of the leading law firms in the world for cross-border investigations. The GIR 100, an independent guide to the world’s best firms for investigations, recognized C&G for its major victories on behalf of high-profile individuals and companies and its strong network of prominent lawyers in key jurisdictions around the globe.

GIR recognized the U.S. team’s deep bench of “former attorneys from New York’s famed prosecution offices,” and its “impressive work for corporates” in recent years. The guide also highlights the firm’s international reach, calling attention to C&G’s “strong practice in France” and the rapid development of its London office, which it describes as having “grown from strength to strength” with the recent addition of Richard Kovalevsky QC.

GIR also shortlisted C&G for the Most Important Court Case of the Year award for the significant victory on behalf of KBR Inc. at the UK Supreme Court. It is the second time in four years that C&G has been named a finalist for this award. The firm was previously recognized in 2018 for securing the dismissal with prejudice of a high-profile FCPA case brought by the U.S. Securities and Exchange Commission.

The GIR 100 is based on submissions from law firms and extensive research, and honors the top 100 firms around the world that handle sophisticated government-led, internal, and cross-border investigations.

International law firm Cohen & Gresser has been recognized by The Legal 500 UK for its “wide international reach” and “seamless collaboration” on cross-border investigations and disputes. Client commentary highlights C&G’s London office as “the go-to team for risk advisory” work and notes that clients should “instruct them before the other side does.”

C&G is recognized as a leading firm in the Regulatory Investigations and Corporate Crime (Advice to Corporates) category. The guide emphasizes the firm’s work with respect to the UK Serious Fraud Office (SFO) and notes that the team is “distinguished by its ability to draw on the expertise of experts in Washington, DC, New York, and Paris” for its multi-jurisdictional work. Clients highlight the team’s “astonishing depth of knowledge,” “strong connections to authorities,” and “razor-sharp analytical skills.”

The Legal 500 also recognized C&G in the Fraud: White-Collar Crime (Advice to Individuals) category. The guide notes that the firm is known for “housing a very strong team of white-collar crime specialists” who are “well-versed in representing senior executives and high-net-worth individuals” in all types of cases and investigations. Clients highlight the practice’s “terrific experience in the most high-profile and difficult cases” and praise the diverse experience each team member brings to the firm’s cases, including as city lawyers, ex-SFO prosecutors, solicitors from crime boutiques, and barristers.

C&G is also recognized as a leading firm in the Commercial Litigation: Mid-Market category. The guide recognizes the firm’s experience in complex, cross-border commercial litigation and highlights the team’s strength in financial services representations, particularly with respect to investment funds litigation and banking and financial services disputes. Clients applaud the practice as “well organized and accessible” and underscore the team’s ability to “give you a full picture” and “summarise the essential of what needs to be known.

In addition, Richard Kovalevsky QC has been recognized as a “Leading Individual” for Regulatory Investigations and Corporate Crime (Advice to Corporates). Richard, who joined C&G in November 2020, is described by clients as “clever and experienced” and a “major addition for the firm.”

Ranked Practice Areas:

  • Regulatory Investigations and Corporate Crime (Advice to Corporates)
  • Fraud: White-Collar Crime (Advice to Individuals)
  • Commercial Litigation: Mid-Market
Recognized Individuals:

  • John Gibson: Commercial Litigation: Mid-Market; Fraud: White-Collar Crime (Advice to Individuals); Regulatory Investigations and Corporate Crime (Advice to Corporates)
  • Richard Kovalevsky QC: Commercial Litigation: Mid-Market; Fraud: White-Collar Crime (Advice to Individuals); Regulatory Investigations and Corporate Crime (Advice to Corporates)
  • Jumana Rahman: Commercial Litigation: Mid-Market
  • Thomas Shortland: Commercial Litigation: Mid-Market; Regulatory Investigations and Corporate Crime (Advice to Corporates)
  • Tim Harris: Fraud: White-Collar Crime (Advice to Individuals); Regulatory Investigations and Corporate Crime (Advice to Corporates)
About The Legal 500: The Legal 500 analyzes the capabilities of law firms across the world. Its rankings “highlight the practice area teams who are providing the most cutting edge and innovative advice to corporate counsel.”

Global Investigations Review (GIR) has again nominated Cohen & Gresser for its Most Important Court Case of the Year award for the major victory at the UK Supreme Court achieved by C&G’s Richard Kovalevsky QC on behalf of KBR Inc. On February 5, 2021, the UK Supreme Court handed down a landmark judgment that delivered a decisive victory to KBR Inc. and agreed to the arguments presented by Richard and the rest of the KBR legal team. In its decision, the Supreme Court held that the SFO could not compel a foreign company to produce documents held abroad under Section 2(3) of the Criminal Justice Act of 1987.

Cohen & Gresser is pleased to announce that Spear’s Wealth Management has named Jeffrey M BronheimJohn W Gibson, and Richard Kovalevsky QC to its 2021 Legal Directory & Hommes d’Affaires index. The Spear’s legal index identifies the top legal counsel for private clients in the UK.

Jeff Bronheim is featured as a “Top Recommended” corporate lawyer in the 2021 index. Spear’s notes that Jeff is an “eminent and personable partner” and “comes highly recommended by a senior adviser in wealth management.” Jeff serves as the Managing Partner of Cohen & Gresser’s London office and has over 30 years of experience assisting funds, companies, high-net-worth individuals, and family offices with complex legal and business issues, including investments, regulatory considerations, disputes, and structural planning.

John Gibson is featured as a “Top Recommended” criminal lawyer in the 2021 index and is commended for his “expertise with UK/US cooperation in economic crime investigation.” John leads Cohen & Gresser’s UK White Collar and Investigations practice and is a former senior prosecutor at the UK’s Serious Fraud Office. He offers rare insight into the focus of UK law enforcement and financial regulation, when and how to engage with regulators and prosecutors, and how to develop and deploy the best litigation strategy for a wide range of criminal and compliance situations.

Richard Kovalevsky QC, featured consistently by Spear’s as a “Top Recommended” criminal lawyer, is once again included in the 2021 criminal lawyers and hommes d’affaires indices. Spear’s highlights “the wide range of cases that come across Kovalevsky’s desk” and notes that “his client base is similarly varied.” Richard is the head of Criminal Defense for the London office. He specializes in advising and representing high-net-worth individuals in connection with international and domestic issues and is known for his discreet tactical approach and expertise.

From Cohen & Gresser’s office in Mayfair, Jeff, John, Richard, and their UK colleagues work closely with attorneys in Cohen & Gresser’s U.S. and French 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.

Richard Kovalevsky QC has been recognized by Chambers in its 2021 High Net Worth guide as a Band 1 lawyer for Financial Crime: High Net Worth Individuals in the UK. Chambers notes that Richard is “highly sought after by high net worth individuals under investigation by the FCA, the SFO and the DOJ.”

Richard received outstanding praise from clients and colleagues, with one interviewee describing him as “a very bright lawyer” with a “lovely presentational style” and “savviness.” Another interviewee notes that “he is very down to earth, very straightforward, and clients like that. He comes up with creative solutions to complex problems. He is very dedicated to his clients and he is very good to work with."

 Published by Chambers & Partners, the 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.

International law firm Cohen & Gresser today announced that Richard Kovalevsky QC, a distinguished barrister and Queen’s Counsel, will join the firm’s White Collar Defense & Regulation group as a partner in its London office. As head of Criminal Defense for the London office, Richard’s hire will bolster Cohen & Gresser’s highly-regarded White Collar Defense practice and strengthen the firm’s ability to provide clients with sophisticated and strategic guidance on the most complex government and internal investigations.

Cohen & Gresser announces the expansion of its White Collar Defense & Regulation and Litigation & Arbitration groups in London with the addition of Thomas W Shortland. Tom advises on a broad range of domestic and cross-border disputes including civil, regulatory, and criminal matters. Prior to joining C&G, Tom practiced at Cleary Gottlieb Steen & Hamilton where, between 2015 and 2016, he was seconded to the Bribery & Corruption Division of the UK’s Serious Fraud Office as an Investigative Lawyer.

Cohen & Gresser announces the appointment of Pere Puig Folch as Consulting Director of Data Strategy. Pere will work from the firm’s London office and support Cohen & Gresser’s operations worldwide.

Pere will oversee the expansion of Cohen & Gresser’s technology capabilities and the introduction of advanced machine learning techniques for use in Big Data litigation and investigations. He will work closely with Thomas Powers, the firm’s e-Discovery Manager based in New York. Together, they will collaborate with external IT and data vendors to design innovative case-work data strategies.

View All

General Inquiries

Managing Partner

Daniel H Mathias

2-4 King Street
St James’s, London

+44 (0) 20 8037 2330 phone