# Forensic and investigation services Market-driven expertise in investigations and dispute resolution ### Our forensic and investigation services team will support you at every stage of your matter, in an investigative, advisory or testifying expert witness capacity. Complex, high stakes fraud and integrity matters and commercial disputes require recognised and trusted professionals to deliver diverse solutions. Ranked Band 1 Forensic Accountants by Chambers and Partners, our full-service practice includes dispute resolution, investigations, contentious valuations, competition and monitoring trustee, data analytics, corporate intelligence and corporate risk and assurance capabilities. **50+ times our UK disputes team have been expert witnesses including on claims worth multiple US$ billions** **Top Ranked for Litigation Support in 2025 Chambers Rankings** **150 markets worldwide where our team have local knowledge and sector expertise** ## Our forensic and investigation services [Whistleblowing and investigation support](https://www.grantthornton.co.uk/services/forensic-and-investigation-services/whistleblowing-and-investigation-support/) Whistleblowing frameworks provide many benefits – find out how to build trust and manage risks in a confidential, cost-effective, robust way. [Litigation support](https://www.grantthornton.co.uk/services/forensic-and-investigation-services/litigation-support/) Industry-wide litigation support and investigation services for lawyers and law firms. [Forensic investigations and special situations](https://www.grantthornton.co.uk/services/forensic-and-investigation-services/forensic-investigations-and-special-situations/) Do you need clarity in an uncertain situation? If you're accused of wrongdoing we can help you get the facts right. [Competition and monitoring services](https://www.grantthornton.co.uk/services/forensic-and-investigation-services/monitoring-trustee-and-competition-services/) Monitoring trustee services to competition, financial and regulatory bodies. [Corporate Intelligence](https://www.grantthornton.co.uk/services/forensic-and-investigation-services/corporate-intelligence/) Corporate intelligence often involves cross-border complexities. Our experienced team can offer support. [Disputes advisory](https://www.grantthornton.co.uk/services/forensic-and-investigation-services/disputes-advisory/) Advising on quantum, accounting and financial issues in commercial disputes. [Forensic data analytics](https://www.grantthornton.co.uk/services/forensic-and-investigation-services/forensic-data-analytics/) Our forensic data analytics team are helping businesses sift the truth from their data. See how we can help your firm. [Financial crime](https://www.grantthornton.co.uk/services/forensic-and-investigation-services/financial-crime/) Supporting your fight against financial crime in an ever-changing environment ## Why Grant Thornton Where you have experienced financial loss, regulatory enforcement or are the subject of a legal claim, we will assist you to recover financially and operationally, providing you with the assurance you need to satisfy regulators, shareholders, executives and staff. Our global forensic practice spans over 145+ countries, providing an international capability wherever you may need it, enhanced by local expertise. You will get lean, senior and multidisciplinary teams that are outcome oriented. We find and use information to help inform your strategic decision-making. ## Awards Legal 500 - Top Tier Disputes Services Provider 2026 ## Get in touch ## Steve Holt Partner, lead of the Global Forensic Practice [Contact Steve Holt](https://www.grantthornton.co.uk/services/forensic-and-investigation-services/) [Learn more about Steve Holt](https://www.grantthornton.co.uk/people/steve-holt/) ### Nested Financial Crime… [Video: Nested relationships in correspondent banking can expose firms to hidden financial crime risks. Learn how to improve oversight, transparency and monitoring.](https://www.grantthornton.co.uk/insights/nested-financial-crime-risks-in-correspondent-banking/) 3 min listen|27 May 2026 ### FCA wholesale markets… [Article: A practical overview of the FCA’s 2026 wholesale markets priorities, highlighting key risks in financial crime, market abuse and conflicts of interest.](https://www.grantthornton.co.uk/insights/fca-wholesale-markets-report--aligning-with-fca-expectations/) ### How to prepare for an FCA… [Article: Practical guidance on preparing for an FCA sanctions compliance review, covering regulatory expectations, programme readiness and how to respond effectively.](https://www.grantthornton.co.uk/insights/how-to-prepare-for-an-fca-sanctions-compliance-review/)