Forensic and Investigation Services

Mazars has a range of credible Expert Witnesses and Investigations partners that have given evidence in court and arbitrations and led complex internal investigations.

Our Forensic and Investigation Services (FIS) team has extensive experience of providing high-quality, timely and cost-effective investigations, advice, expert reports and expert testimony on financial and accountancy matters, including:

  • Litigation and arbitration – acting as party appointed, single joint expert or expert advisor in a host of litigation, English and international arbitration and Alternative Dispute Resolution procedures; and
  • Investigations providing authoritative and impartial advice in investigations and asset recoveries

Projects are led by partners with significant experience. All have a proven track record and the partners have given evidence on many occasions in the UK, Europe, Africa, USA and Asia Pacific.

At Mazars we understand that success is built on genuine expertise. It is our practise to propose an assignment team that best fits the requirements of the case, whether that team comprises solely FIS specialists or combines the experience and expertise of our FIS team with that of other industry specialists drawn from our Audit and assurance, Tax or Advisory  service lines within our global firm.

The FIS team  has experience of undertaking assignments in a wide range of sectors including: inter alia, oil & gas, shipping, mining, telecommunications, intellectual property and royalties, pharmaceuticals, and financial services (including insurance).

We provide a practical and tailored approach to each assignment, and are sensitive to concerns over business disruption, confidentiality and reputation issues. The hands on, innovative and proactive approach of our partners ensures we thoroughly investigate and analyse your case to meet your needs. We present our findings as a written report or statement and, when required, in the witness box.


“We needed an expert accountant with detailed oil & gas experience for a complex international ICC Arbitration who understood the whole dispute resolution process and our needs of an expert. Working with Mazars was a pleasure as the expert and his team had extensive sector experience and we were able to trust them in all aspects of the case. The Mazars team lightened our load and they anticipated our needs from start to finish, producing timely, quality reports and the expert gave robust oral evidence at the final hearing in Geneva.”

Forensic technology practice

Mazars’ Forensic Technology practice can support your organisation with complex investigations and dispute resolution assignments across four continents.