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Our expert witness experience

1. Case strategy

What's at stake? 

Choosing an independent expert just in time for the preparation of a report is often a false economy. Your expert should be able to help you shape the development of your case strategy, particularly in shaping the discovery process.


Advice to a client and its lawyers in the development of its case in relation to a dispute between two mobile operators in Africa

How we can help
Examples of case strategy


Appointed as an expert for an interconnect dispute between a fixed and mobile operator in an Eastern European country


Advisor to a technology company in a two-sided market in relation to the CMA’s investigation into abuse of dominance in the provision of electronic platforms for supply, maintenance and repair of motor vehicles

2. Expert appointment: Liability

What's at stake? 
Choosing an expert on liability separately from your quantum expert may expose your case to unneeded risk

Exp app


Loss of profit determination for an executive for early termination of his contract with a major entertainment and leisure company

How we can help
Examples of liability


Economic expert and advisor to European financial sector regulator in relation to misconduct in the foreign exchange market and the impact of the alleged misconduct on a bank's profitability


Loss of profit determination on behalf of a leading industrial technology firm in the UK in a dispute with its major supplier 

3. Expert appointment: Quantum

What's at stake? 
Whether the expectation of quantum is in the millions or billions, it is critical to have a credible and robust quantum expert to be able to report definitively on your case.

Exp app Q


Economic advisor and analysis of quantum for a defendant in relation to a follow-on damages claim in the UK High Court in the European copper tubes cartel

How we can help
Examples of quantum

David Thomas acted as a quantum expert on behalf of the respondent in a high-profile dispute between the two main telecom operators in Liberia concerning allegations of a cyberattack and the resulting financial losses. DT Economics examined and modelled key issues relating to commercial viability, competitive market conditions, pricing strategies, network and technological differences, customer satisfaction studies and the specific nature of the attacks, as evaluated by the cybersecurity expert.


The judge in this case noted the proficiency of the examination produced, suggesting that David had conducted a robust analysis. The final assessed losses largely aligned with David's reports and testimony, and the final damages were far closer to David's assessment than that of the opposing expert.


This case was included in The Lawyer magazine's 2022 Top 20 list—one of two cases on that year's list in which David acted as an independent expert.


Retained as an expert witness to develop counterfactual valuations and provide testimony in an international dispute between shareholders and management of the business regarding business strategy of a West African mobile operator

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