Legal disputes, regulatory investigations, and financial litigation often turn on technical details: pricing models, risk calculations, valuation assumptions, statistical methods, and quantitative systems. Legal outcomes can depend critically on whether the underlying mathematics and models are technically sound.
We provide expert testimony and independent consulting and litigation support services for law firms, legal teams, and expert witnesses requiring specialist support in mathematics, quantitative finance, and financial risk.
Quantitative support for litigation and regulatory matters
Modern legal disputes in the financial services frequently involve derivatives pricing disagreements, alleged model errors or mis-calibration, risk models used for capital, automated or AI-based decision systems, statistical claims requiring scrutiny, and regulatory expectations around model governance and validation.
These matters require deep technical analysis. General financial expertise is often insufficient. What is needed is expert quantitative insight: the ability to reconstruct the mathematics, identify hidden assumptions, test internal consistency, and assess whether conclusions are supported by the underlying models.
How we work with law firms and expert witnesses
Our role is to provide independent technical analysis and clarity.
We support lawyers and expert witnesses by analysing quantitative models and calculations used by banks, funds, or vendors; identifying incorrect assumptions, implementation errors, or conceptual flaws; assessing whether the models behave as claimed under realistic conditions; evaluating whether methodologies align with regulatory or industry standards; and translating complex mathematical findings into clear, structured explanations suitable for legal and expert reports.
This work is commonly used in litigation, disputes, regulatory responses, internal investigations, expert witness preparation, and early-stage technical assessments before proceedings escalate.
Areas of expertise
Mathematics and statistics
Probability and differential equations, coding and algorithms, numerical methods and approximation error, statistical inference, misuse of data, sensitivity analysis, and robustness testing.
Quantitative finance
Market risk and VaR calculation, derivatives pricing including interest rate, FX and equity options, structured products, and exotics; operational risk modelling; credit and liquidity risk models; reconciliation disputes; and analysis of model assumptions versus real-world behaviour.
Financial risk and model governance
Model validation and independent challenge, risk systems, AI and automated decision tools in finance, and alignment with regulatory expectations in disputed or investigative contexts.
Independent expert analysis, not advocacy
We work independently of banks, vendors, and large consulting firms. My role is not advocacy, but objective technical assessment.
An alternative to large consulting firms
Large consulting firms are frequently engaged in financial disputes and regulatory matters, but their operating model is not always well suited to focused, technically precise analysis.
Law firms often require clear, independent quantitative insight rather than large delivery teams, generic reporting, or broad advisory scopes. Major consulting firms typically operate with higher overheads and layered staffing models, which can dramatically increase cost without improving technical clarity.
Our consulting approach is deliberately different. I work as a single, independent specialist, providing direct analysis in mathematics, quantitative finance, and financial risk. Engagements are narrowly scoped and focused on the specific quantitative questions relevant to the matter.
For many legal teams, this offers greater proportionality, clearer accountability, faster turnaround, and substantially lower cost than large consulting engagements.
When legal teams engage quantitative experts
Law firms and expert witnesses typically engage this type of support when a case hinges on technical modelling or financial calculations, internal explanations from financial institutions do not withstand scrutiny, expert opinions require rigorous quantitative backing, regulators or counterparties raise modelling objections, or early independent analysis could materially affect legal strategy.
Identifying technical weaknesses early often changes the trajectory of a matter.
Getting in touch
If you are a lawyer or expert witness working on a matter involving mathematics, quantitative finance, or financial risk and require independent technical analysis, contact us to discuss how we can help.