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Harriet Territt has 20 years of experience in resolving significant financial disputes and regulatory issues with a particular focus on the cutting edge of financial technology. Her practice covers all forms of complex financial instruments, with significant experience relating to derivatives and structured products. She regularly solves disputes by negotiation, mediation, and wholesale restructuring of transactions as well as by representing clients in court and related proceedings. Harriet is actively involved in Jones Day's global, cross-disciplinary LIBOR transition team, advising on the full range of legal and regulatory issues arising from the forthcoming market transition to alternative reference rates.

Increasingly, Harriet works with clients on liability, risk, and governance issues arising out of the fintech revolution such as DLT (distributed ledger technology, also known as blockchain), AI implementations, payments, crypto assets, digital currencies, alternative finance arrangements, and consumer facing products. She is a founding member of Jones Day's blockchain initiative and coauthor of Jones Day's multijurisdictional blockchain overview.

Harriet is regularly asked to advise on complex issues related to global financial sanctions and money laundering rules. She deals with related matters including market abuse allegations and has undertaken highly confidential internal investigations and compliance reviews for clients in the financial and regulated sector. She represents organizations and senior individuals in enforcement proceedings before regulators such as the FCA (Financial Conduct Authority).

Harriet is co-chair of the Jones Day Women's Group, helping to develop the next generation of female business leaders.


  • Macquarie agrees to acquire Suez Recycling and Recovery UK Group for approximately €2.4 billionJones Day is advising Macquarie Asset Management in the execution of a put option agreement to acquire 100% of the shares of Suez Recycling and Recovery UK Group, for approximately €2.4 billion.
  • AIP acquires Aluminium BelgiumJones Day advised American Industrial Partners in the acquisition of 100% of the shares of Aluminium Belgium BV, the parent company which owns Aluminium Duffel, from Ecnavla 8 UK Ltd.
  • Ansys, Inc. acquires OnScale, Inc.Jones Day is advising Ansys, Inc. in the acquisition of OnScale, Inc., a cloud simulation provider.
  • Sun Communities acquires Park Holidays UK for $1.3 billionJones Day advised Sun Communities, Inc. on its acquisition of Park Holidays UK for approximately $1.3 billion.
  • Arsenal Capital Partners' portfolio company Fenzi Holdings acquires Advanced Glass Technologies business of Johnson Matthey PLCJones Day represented Arsenal Capital Partners' portfolio company, Fenzi Holdings SPV S.p.A., in the acquisition and financing of the Advanced Glass Technologies business of Johnson Matthey PLC, which manufactures advanced glass enamels, precious metal pastes and conductive inks for use in automotive glass and other industry applications.
  • American Industrial Partners Capital Fund VII takes control of Aluminium Dunkerque companiesJones Day has advised American Industrial Partners Capital Fund VII, L.P. in connection with the acquisition of the Aluminium Dunkerque companies through the foreclosure on the shares of Liberty France Industries 1 SA, which were pledged to affiliates of AIP under mezzanine financing arrangements previously provided to Aluminium Dunkerque, due to ongoing payment and other defaults.
  • MassMutual partners with Low Carbon to accelerate transition to renewable energyJones Day advised Massachusetts Mutual Life Insurance Company (MassMutual) on its debt and equity investment in Low Carbon Energy Holdings Limited (“Low Carbon”), a subsidiary of Low Carbon Limited, an established pan-European renewable energy developer and fund manager.
  • Goldman Sachs acquires The Belfry Hotel & ResortJones Day advised Goldman Sachs in the acquisition and financing of The Belfry Hotel & Resort from an affiliate of KSL Capital Partners.
  • Framatome acquires Rolls-Royce Civil Nuclear Instrumentation and Control business in France and ChinaJones Day advised Framatome, an international leader in nuclear energy recognized for its innovative solutions and value added technologies for the global nuclear fleet, in its acquisition of the Rolls-Royce Civil Nuclear Instrumentation and Control business in France and China.
  • Bally's acquires Gamesys for $2.7 billionJones Day advised Bally's Corporation in connection with the $2.7 billion acquisition and financing of Gamesys Ltd., an LSE-listed online gaming company.
  • Macquarie acquires Beauparc Utilities, Ireland’s largest waste management companyJones Day advised Macquarie European Infrastructure Fund 6 in the acquisition and financing of Beauparc Utilities, Ireland’s largest waste management company.
  • Pepper Global completes IPO of subsidiary, Pepper Money on ASXJones Day advised Pepper Global on the demerger and initial public offering (IPO) of its subsidiary, Pepper Money Limited, on the ASX.
  • Pepper Global restructures corporate groupJones Day advised Pepper Global, a leading diversified global loan servicer and lender, on a major restructure of its corporate group.
  • Allrise Capital leads Series A investment in IntellectoKidsJones Day represented Allrise Capital in its lead Series A investment in IntellectoKids, a rapidly growing provider of online educational solutions for kids.
  • PolyOne acquires Clariant color and additive masterbatch business for $1.5 billionJones Day advised PolyOne Corporation in the $1.5 billion purchase of Clariant’s global color and additive masterbatch business.
  • Macquarie sold Condor FerriesJones Day advised Macquarie Infrastructure and Real Assets in the sale of Condor Ferries, an operator of lifeline freight and passenger ferry services between Guernsey, Jersey, the United Kingdom, and the Port of St. Malo in France, to a consortium of Columbia Threadneedle European Sustainable Infrastructure Fund (ESIF) and Brittany Ferries.
  • Sumitomo Heavy Industries invests $46 million into Highview PowerJones Day advised Sumitomo Heavy Industries, Ltd., a technology leader in industrial machinery and environmental and power technologies, in its $46 million investment into Highview Power, a global leader in long-duration energy storage solutions.
  • Inflexion Private Equity acquires Aspen PumpsJones Day advised Inflexion Private Equity Partners LLP, one of the UK's leading mid-market private equity firms, on its acquisition of the Aspen Pumps group from 3i Group plc.
  • Pepper Group to sell Pepper European Servicing to Link Group for €165 millionJones Day is advising Pepper Group Limited, a leading diversified global consumer finance business, in connection with its sale of Pepper European Servicing (PES) to Link Group.
  • United Nations University obtains assistance with "Survivor's Package" for survivors of modern slavery and human traffickingJones Day conducted worldwide research for the United Nations University Centre for Policy Research to assist in the development of a "Survivor Package" for survivors of modern slavery and human trafficking.
  • Speaking Engagements

    • June 24, 2020
      FMLC 2020 Judicial Seminar, providing senior UK judiciary with an update on types of financial market litigation which may arise from COVID-19.
    • June 18, 2019
      PILnet 2019 European Convening, Panel event on Supporting the Resilience of Organized Civil Society: Regaining Legitimacy with the Help of Law and Technology
    • April 30, 2019
      World Justice Forum 2019, Chairing panel on Why Business Needs to be Part of the Movement Towards Global Access to Justice
    • April 4, 2019
      INSOL International Annual Conference, Blockchain: Where are the Opportunities?
    • August 1, 2018
      ASEAN Law Conference 2018, Chairing the Panel on Disruptive Technologies on Business Landscapes in ASEAN: Opportunities and Challenges
    • May 2, 2018
      Bingham Centre for the Rule of Law, Global Rule of Law Exchange annual conference
    • June 6, 2017
      Navigating Risk and Regulatory Change, Bloomberg Compliance Symposium.
    • May 25, 2017
      Enforcing and Challenging Arbitral Awards in England and Wales, Presentation to Pepperdine School of Law, Straus Institute for Dispute Resolution Summer Program
    • September 15, 2016
      Blockchain Forum – Singapore
    • September 14, 2016
      DD2.0 - Rebooting the Compliance Diligence Process
    • June 29, 2016
      Brexit: UK votes to leave the EU: What happens next?
    • February 10, 2016
      The Blockchain: What Is This Technology? Why Does It Matter?
    • June 17, 2015
      Yukos Billion Dollar Message and Its Implications for the Current Foreign Investment Climate In Russia
    • May 21, 2015
      Enforcing and Challenging Arbitral Awards - the Straus Institute for Dispute Resolution
    • April 30, 2014
      British Expertise - Sanctions: Practice and Pitfalls
    • October 17, 2013
      American Bar Association - Section of International Law: Investing in Emerging Countries: Practical Tips
    • October 16, 2013
      Navigating Global Risk
    • September 25, 2013
      Ethical Business in a Changing World - A Joint AWLL and Jones Day Workshop
    • May 22, 2013
      Enforcing and Challenging Arbitral Awards in England and Wales, Pepperdine University
    • February 2, 2012
      Globalization of Anti-Corruption Enforcement: Russia
    • October 2011
      Litigation in the OTC Derivatives Market, ISDA Symposium
    • October 2011
      IQPC Anti-Money Laundering and Financial Crime Summit
    • October 2011
      Anti-Corruption Nuts & Bolts, ABA Conference
    • June 30, 2011
      Managing Your Risk - Bribery, Corruption and Business Ethics
    • May 2011
      Managing your Risk - Bribery, Corruption and Business Ethics
    • January 19, 2011
      Integrity Management Workshop
    • January 2011
      The 19th Annual London MCLE Fair (UK Bribery Act 2010)
    • January 2011
      Maintaining Integrity in a Changing World, Jones Day and Control Risks on the Bribery Act 2010 Seminar
    • October 2010
      ISDA Symposium® - Litigation in the OTC Derivatives Market
    • June 2010
      ISDA Symposium® - Litigation in the OTC Derivatives Market
    • January 2009
      Panel Discussion on Fraud