In high-stakes investment and commercial international arbitrations, The Brattle Group provides clients with expert consulting services and testimony on complex economic and financial issues.

Our experts have testified in disputes in all of the major international arbitration forums and have covered a wide range of topics, including breaches of contract; shareholder, M&A, and joint venture disputes; pricing disputes; and cases related to intellectual property. We work on behalf of both investors and states as well as commercial claimants and respondents. Our work has involved assets in Africa, Asia, Australia, Europe, North America, and South America. Over the past three years, we have provided oral testimony in arbitrations with an aggregate claim value over $20 billion.

This breadth of expertise positions us to provide valuable insights throughout all phases of disputes, transparently explain the economic consequences of different legal positions, and help ensure that strategies have solid economic and financial foundations. Our teams seamlessly support our clients regardless of the governing law of the dispute, the language of the arbitration, or the applicable arbitration rules.


We have worked on behalf of 26 of the law firms named in the Global Arbitration Review 30.


Building the right team of experts is critical to resolving a dispute favorably. Brattle experts hail from a variety of backgrounds, which allows them to speak authoritatively on best practices and preeminent techniques in finance, economics, accounting, and statistics. Our experts are regularly recognized as leading experts by top industry publications, including Who’s Who Legal and Global Arbitration Review.

Brattle Experts

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Academic Advisors and Outside Experts

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Richard Caldwell
  • Principal

  • London

Mr. Caldwell is a Principal in the London office of The Brattle Group and has been with the firm for just over 20 years. Richard is an economics and financial expert, with experience valuing businesses and financial instruments across a range of industries, from electricity to banking to telecoms, and in a range of settings. He routinely provides economic and financial advice concerning corporate finance and valuation, the pricing of securities and derivatives, and assessments of regulatory issues.

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