Rob

Mason

Partner
London
English

What our clients say

"Rob Mason is outstanding on technical pieces."

Client Reference

Chambers and Partners Insight Report

What our clients say

"Rob knows what he's doing, very experienced."

Client Reference

Hodge Malek KC, Chair of U.K. Competition Appeal Tribunal

What our clients say

Rob Mason brings over 25 years of experience in investment banking and forensic accounting, specializing in litigation, arbitration, and regulatory enforcement matters across the UK, Europe, Japan, China and the US. He is recognized for his expertise in valuing and analyzing complex structured products, derivatives, and financial instruments in high-stakes disputes and investigations.

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Expert Reports and Testimony

  • Investment Bank: Expert report and testimony in litigation in the London Commercial Court between an investment bank and investors regarding the sale of complex structured products (Haider Abdullah vs. Credit Suisse, [2017] EWHC 3016 (Comm)
  • Olympus Corporation: Expert report for the Tokyo District Court on the impact of fraud in Olympus Corporation’s financial statements on its share price pre- and post-disclosure.
  • Barclays: Expert witness statement relating to the funding of Qatari investment in Barclays filed with UK criminal court in relation to charges against former Barclays executives.
  • Trading Firm: Expert report to Chinese authorities on the trading activity and algorithmic software of a proprietary high-frequency trading firm in relation to allegations of market manipulation.
  • ICSID/PCA Arbitration: Expert report and testimony in ICSID/PCA arbitration between a state enterprise and a service provider relating to the validity of billing by the supplier.
  • Family Trust: Expert reports to Jersey and Guernsey Courts on the projected long-term performance of various asset allocation strategies and monetary distributions in the context of a restructuring of family trusts.
  • European Manufacturing Company: Expert advice to legal counsel acting for a major European manufacturing company in defense of securities class action claims.
  • Investor Dispute: Expert report to Japanese court on fairness opinion and fair value of shares of minority stake in company taken subject to tender offer by controlling investor.
  • Financial Institution Appeal: Analysis of the creditworthiness of a financial institution to assess the recoverability of a settlement in the context of a potential appeal from the London Commercial Court.
  • Company Executive Criminal Case: Review of expert report on the materiality of false disclosures by a company in the context of criminal charges against a former executive.

Valuations, Profit and Ability to Pay Analyses

  • Gunvor SA: Supported the Switzerland-based commodities trading firm and its external counsel in a complex profit calculation that led to a USD 660m fine and profit forfeiture, agreed with the US DOJ and Swiss Office of the Attorney General.
  • Dutch Arbitration / Post M&A Dispute: Valuation of a portfolio of commodity derivatives and physical commodity inventory in the context of a post-M&A dispute in a Dutch arbitration.
  • Swiss Bank: Subject matter lead on audit for Swiss regulator of structured lending and regulatory reporting by a Swiss private bank.
  • Investment Bank: Preparation and presentation to the US DOJ an analysis of a major investment bank’s profit on a portfolio of structured products in relation to alleged Foreign Corrupt Practices Act (FCPA) violations.
  • Engineering Company: Preparation and presentation to the US DOJ an analysis of a multinational engineering company’s ability to pay a penalty in relation to alleged FCPA violations.
  • Aerospace Company: Analysis of profit and loss on a multi-billion-dollar portfolio of FX derivatives for a major aerospace company in the context of a global settlement relating to bribery allegations.
  • Commercial Dispute: Analysis of trading activity and assessment of quantum relating to cum-ex dividend tax claims in a commercial dispute.
  • Financial Institution FCA Investigation: Analysis of trading activity for a financial institution in the context of a UK Financial Conduct Authority investigation into potential market abuse.
  • SFO Ability to Pay: Preparation and presentation to the UK Serious Fraud Office (SFO) an analysis of a company’s ability to pay confiscation and a fine in relation to criminal charges under the Bribery Act.
  • Company Executive Criminal Case: Review of costs and revenues models for service contracts in the context of criminal charges against a former company executive.
  • Financial Institution Insider Trading: Review of trading records, risk reports and call transcripts in the context of an internal investigation by a financial institution into potential insider trading.
2024-2025 Consulting Experts - Forensic Accountants, Lexology Index
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Biography

Rob Mason brings over 25 years of experience in investment banking and forensic accounting, specializing in litigation, arbitration, and regulatory enforcement matters across the UK, Europe, Japan, China and the US. He is recognized for his expertise in valuing and analyzing complex structured products, derivatives, and financial instruments in high-stakes disputes and investigations.

Authority experience

US Department of Justice (DOJ)
US Securities and Exchange Commission (SEC)
Serious Fraud Office (SFO)
The Financial Conduct Authority (FCA)
Parquet National Financier (PNF)
China Securities Regulatory Commission (CSRC)

Awards & Recognition

2024-2025 Consulting Experts - Forensic Accountants, Lexology Index

Accreditations

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Languages

English

News and insights

News

FRA Experts Recognized in Lexology Index Consulting Experts 2025

News

FRA Enters Chambers and Partners High Net Worth Guide 2025

Article

UK Review Raises Red Flag on Conflicts of Interest in Private Market Valuations