Trevor

Wiles

Partner
London
English

What our clients say

"Trevor is an outstanding forensic accountant and he is excellent for contentious matters."

Client Reference

Lexology Index

What our clients say

"His credentials cannot be doubted, and he earns you the credit that you need with regulators."

Client Reference

Chambers and Partners, Litigation Support Guide

What our clients say

“Trevor has a tremendous understanding of digital forensics and is a top choice in the UK market”

Client Reference

Lexology Index

Trevor Wiles brings over 30 years of experience assisting clients and counsel in complex, multi-jurisdictional cases arising from whistleblower reports and regulatory actions. Trusted to help navigate fraud, bribery, corruption, and financial misconduct, he helps organizations respond effectively and decisively to regulatory scrutiny. Clients praise his ability to “get across the detail, while also having the bigger picture in mind” (Chambers and Partners).

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Trevor has extensive experience across sectors including energy, financial services, telecoms, pharmaceuticals, and manufacturing, with engagements spanning Europe, the Middle East, Africa, and Asia. He works closely with clients and counsel on complex disputes and investigations, integrating forensic technology and data analytics to uncover key evidence efficiently. He also advises on designing and testing ABAC and anti-fraud compliance programs.

Before joining FRA, Trevor spent 20 years in KPMG’s London forensic team.

Regulatory Investigations 

  • Entain plc: Supported the company in relation to an HM Revenue & Customs investigation, resulting in the first ever DPA with the UK Crown Prosecution Service and a GPB 585m settlement.
  • Insurance Company: Supported a regulatory investigation into issues surrounding inappropriate workplace culture, which included collecting, hosting and reviewing 5.5TB of unstructured data from email services, chat applications and employee mobile devices for review by regulator and company counsel.
  • Multinational Software Company: Supported company and counsel with an investigation into allegations of inappropriate revenue recognition and corruption by the US SEC, The Autorite des Marches Financiers (AMF), and Strategic Intelligence and Economic Security Service (SISSE).
  • “Big Four” Accounting Firm: Conducted a targeted review of the firm’s quality control system as required by the UK’s Financial Reporting Council (FRC), including root cause analysis and the design and implementation of policies and procedures and related corporate culture initiatives.

Internal Investigations 

  • UK-listed Mining Company: Investigated multiple internal whistleblower allegations of corruption, procurement and trading fraud concerning the company's operations in sub-Saharan Africa, including in the DRC.
  • Middle East Pharmaceutical Company: Led an internal investigation into sales and marketing practices following a whistleblower report.
  • Global Financial Services Firm: Conducted an extensive investigation related to a civil complaint by the firm’s recently acquired fintech company related to multiple allegations, including improper accounting and financial reporting practices, misrepresentations during merger negotiations and due diligence, and other areas of misconduct and mismanagement.
  • Revolution Beauty: Performed an independent investigation into concerns related to overstatement of revenue, the acquisition of a supplier, loans to distributors and senior employees, and changes to the company’s accounting policies, resulting in corrective adjustments and ultimately the lifting of the company’s AIM-listing suspension.
  • Global Manufacturer: Investigated a European subsidiary for a potential overstatement of revenue.
  • Commodities Trader: Investigated relationships with the company’s business partners and third-party agents in Venezuela, which included processing, hosting and reviewing client data to identify evidence of corrupt payments.
  • Gambling Company: Supported the internal investigation, initiated by the company's auditors, related to the embezzlement of several million Euro by the founder and minority shareholder of an acquired subsidiary.
  • Global Oilfield Services Company: Conducted an internal investigation into accounting fraud against an invoice factor provider.
  • Technology Solutions Provider: Supported an internal, independent investigation related to potential regulator action by the Enforcement Conduct Board.
  • Biotechnology Company: Supported an investigation into whether the practices of a local business partner related to the client's business operations in a sanctioned country in the Middle East were potentially illegal and posed a risk to the client.

Disputes

  • Oligarch / Fiduciary Dispute: Conducted a forensic review into allegations of mismanagement and misappropriation of funds held on behalf of the family of an oligarch imprisoned in Russia to support a dispute with the ex-fiduciaries.
  • Family-owned Conglomerate: Supported an asset tracing exercise and disclosure activity in preparation for litigation, including tracing USD 249m through 200 companies in multiple jurisdictions.
2025 Investigations - Digital Forensic Experts, Lexology Index
2025 Consulting Experts - Forensic Accountants, Lexology Index
2024 Investigations Forensic Accountants, Lexology Index
2023 Global Leader - Consulting Experts - Forensic Accountants, Lexology Index
2022 and 2023 Global Leader - Investigations Digital Forensic Experts, Lexology Index
2022 and 2023 Global Leader - Investigations Digital Forensic Experts, Lexology Index
2025 Consulting Digital & Data - Digital Forensic Experts, Lexology Index
Fellow Member of Association of Chartered Certified Accountants (ACCA)

Biography

Trevor Wiles brings over 30 years of experience assisting clients and counsel in complex, multi-jurisdictional cases arising from whistleblower reports and regulatory actions. Trusted to help navigate fraud, bribery, corruption, and financial misconduct, he helps organizations respond effectively and decisively to regulatory scrutiny. Clients praise his ability to “get across the detail, while also having the bigger picture in mind” (Chambers and Partners).

Authority experience

The Financial Conduct Authority (FCA)
Serious Fraud Office (SFO)

Awards & Recognition

2025 Investigations - Digital Forensic Experts, Lexology Index

2025 Consulting Experts - Forensic Accountants, Lexology Index

2024 Investigations Forensic Accountants, Lexology Index

2023 Global Leader - Consulting Experts - Forensic Accountants, Lexology Index

2022 and 2023 Global Leader - Investigations Digital Forensic Experts, Lexology Index

2022 and 2023 Global Leader - Investigations Digital Forensic Experts, Lexology Index

2025 Consulting Digital & Data - Digital Forensic Experts, Lexology Index

Accreditations

Fellow Member of Association of Chartered Certified Accountants (ACCA)

Languages

English

News and insights

News

FRA Experts Recognized in Lexology Index Consulting Experts 2025

Event

The Rundle Cup Polo 2025

Event

FRA's Annual Wine Tasting Soirée in Paris 2025