Matt McCahearty Partner

Partner
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Matt’s practice focuses on complex commercial disputes, regulatory enforcement and investigations.

Matt leads the litigation and dispute resolution group and is a member of the firm’s Management Committee.

He has more than 20 years’ experience advising global corporations and financial institutions in relation to some of their most significant and sensitive international disputes, investigations and enforcement matters, working frequently with leading independent firms around the world to provide a comprehensive international strategy.

Matt has particular familiarity with litigation, arbitration and regulatory enforcement matters in the US having been seconded to a leading New York law firm and worked extensively on transatlantic cases.

He is ranked as a leading practitioner by Legal 500 in the Commercial Litigation: Premium category and by Legal 500 and Chambers in Contentious Financial Services.

Matt is also actively involved in managing the firm’s international relationships, is a member of the International Bar Association’s Litigation Committee and a Solicitor-Advocate.

Expertise

Recent work

PGA European Tour

Representing PGA European Tour in securing the dismissal of high-profile disciplinary appeals by 12 LIV golfers on the grounds of restraint of trade, breach of competition law, and procedural unfairness.

Global financial institution

Representing a global financial institution in defending multi-billion dollar claims in the High Court arising out of alleged FX manipulation.

Sovereign state

Acting for a sovereign state bringing multi-billion dollar unlawful conspiracy claims which include a conspiracy to manipulate the exchange rate of its currency.

Global travel technology company

Representing a global travel technology company in an expedited claim against a NYSE listed corporation to enforce an SPA relating to a $1.7bn sale. The decision is one of a small number of English authorities to consider Material Adverse Effect provisions in the context of SPAs, and the Covid-19 pandemic.

Global software company

Acting for a global software company seeking to enforce a portion of a $79m US judgment in a long running transatlantic dispute which includes judgments given by the English Court of Appeal, European Court of Justice and US Court of Appeals and an appeal pending before the UK Supreme Court.

Asset manager

Representing an asset manager in the English High Court in a ground-breaking and widely reported case which determined for the first time that the doctrine of repudiatory breach does not apply to multiparty Limited Liability Partnership agreements, and acting on the appeal to the Court of Appeal.

Global financial institution

Representing a global financial institution in one of its most significant regulatory investigations involving allegations of civil and criminal market abuse which resulted in the regulator taking no action.

International investment firm

Representing funds managed by an international investment firm in complex shareholder litigation in the English High Court and, separately, in the Court of Appeal in relation to claims arising out of an investment in a Class X Note in a CMBS Structure.

Global sports brand

Representing a global sports brand in an international arbitration relating to the disputed exercise of a call option over shares in a joint venture company.

Major global retailer

Advising a major global retailer in relation to a highly sensitive regulatory investigation involving alleged failures to control inside information, which resulted in the regulator declining to take any action.

UK listed financial institution

Acting for a UK-listed financial institution in relation to all aspects of its involvement with the significant multi-jurisdictional investigations by civil and criminal agencies into its alleged involvement in the manipulation of Yen LIBOR and associated follow on litigation.

Global financial institution

Together with leading independent firms from around the world, overseeing a global financial institution’s most serious and business critical regulatory and criminal investigations and follow-on litigation.

See all

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What people are saying

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"Matt McCahearty is a fantastic head of litigation: very bright but with a very shrewd tactical sense as well. He is great on strategy and ensures the teams on his cases understand the wider commercial imperatives of his clients. He is one of the very best."

The UK Legal 500 2025

"Matt has a strong command of legal developments, and the current legal landscape."

Chambers UK 2025

"Matthew is a fantastic performer who can navigate the most complex of matters and explain and advise on them clearly. He is also incredibly commercial and never loses sight of his clients' objectives when approaching matters."

Chambers UK 2024

"Matt McCahearty is a brilliant department leader: very bright, totally on top of his cases and with a very sound instinct for what will best promote his clients’ interests."

The UK Legal 500 2024

"Matt McCahearty is a very thorough and able lawyer. Drills to the bottom of difficult and knotty points, and comes up with well reasoned and commercially sound strategic advice for the client. Good at managing large teams in the most complex commercial litigation."

The UK Legal 500 2023

"Matthew McCahearty is very highly regarded."

Chambers UK 2023