UK-wide: A Forensic Accountants Overview

The world of forensic accounting, once considered a narrow specialism, continues to expand. Forensic accountants now work across a wide array of practice areas, including dispute resolution, financial investigations, asset tracing and compliance reviews. Their primary purpose? To bring clarity to complex financial situations. To do so successfully requires technical expertise, analytical rigour, intellectual curiosity and a healthy dose of commercial nous.

This broad skill set results in a remarkably varied client base. Forensic accountants work alongside litigators, specialist arbitration lawyers, corporate staff, regulators, law enforcement officers, and government employees. Cutting across most instructions is the need to establish facts, support legal strategy, and optimise outcomes. Sometimes independent, other times partisan; the forensic accountant must shape their analyses and tailor their conclusions with the end user squarely in mind.

Despite this diversity, the industry is not immune to political, economic and technological disruption. As the world of professional services adapts to change, the contentious world in which forensic accountants operate also continues to develop at pace. This article comments on the topics and trends set to shape this corner of the UK professional services industry in the coming 12 months.

The Economic Landscape: Persistent Disruption

The 2026 AlixPartners Disruption Index, based on respondents surveyed in late 2025, captured a world in which headline anxiety had begun to ease. Globally, the share of executives reporting high disruption fell, and in the UK the figure dropped 10 percentage points to 40%. Inflation had moderated, interest rates had begun to come down, and supply chain pressure – the dominant story of recent years – was no longer flagged as a primary concern by most CEOs.

That picture darkened with the outbreak of the US–Iran war in late February, which triggered what the International Energy Agency has called the largest oil supply disruption in history. Oil prices have moved sharply higher, US headline inflation has rebounded to its highest level in nearly two years, and central banks – including the Bank of England – are now expected to delay or unwind the rate-cutting paths previously priced in by markets.

Layered on top of this are structural pressures identified in the Disruption Index: tariffs and protectionism, cybersecurity, and energy costs, ranked by CEOs as the third-highest disruptive force even before the Iran conflict.

For forensic accountants, this means that the pipeline of disputes is likely to grow rather than contract. We expect a renewed wave of force majeure, business-interruption and supply-contract disputes flowing directly from the conflict, alongside continuing instructions on disputed transactions and breaches of warranties, as inflation and renewed rate pressure squeeze margins.

AI: A New Way of Working and a Driver of Disputes

AI has moved from experimentation to operational reality. Eighty percent of executives report optimism about its impact, around 30% of job functions are now fully integrated with AI tools, and that figure is expected to reach almost half within five years. AI is rapidly becoming a dividing line – separating those building durable competitive advantage from those falling behind.

For forensic accountants, this matters in two distinct ways. First, AI is reshaping the work itself. Teams are deploying generative and agentic tools to review document populations that would once have demanded months of manual effort, to detect anomalies in transaction data, to model damages scenarios at speed, and to visualise complex fact patterns for tribunals. Used well, these tools sharpen the clarity and impact of expert evidence. Used poorly, they introduce fresh risks around data quality, hallucination, source provenance and disclosability – risks that experts must understand and manage.

Second, AI is itself becoming a subject of disputes. We expect more instructions arising from flawed AI-enabled due diligence, arguments over the value of AI assets and proprietary models, and breaches of warranties or IP infringements relating to training data. Cyber incidents – increasingly powered by AI on the attack side – are also driving forensic investigation and quantum work.

Attribution of Shocks

In a world where companies are simultaneously buffeted by tariffs, currency volatility, energy price shifts, regulatory change and AI-driven disruption, one of the most challenging exercises in forensic accounting is the attribution of performance to specific causes.

Whether quantifying losses arising from a contractual breach, valuing a business in an SPA dispute, or assessing the impact of a state action under an investment treaty, the question is which of several overlapping factors caused which part of the shortfall. Tariff exposure, oil-price volatility, post-pandemic working capital normalisation, and even GLP-1-driven changes in consumer behaviour may all affect profits at the same time, and disentangling them requires care.

We expect tribunals and courts to scrutinise expert counterfactuals and comparators more closely as the status quo macroeconomic environment becomes harder to characterise as “normal”.

Sanctions Enforcement and Crypto-Asset Investigations

Sanctions remain a particularly active area of work. The renewed US–Iran conflict has put a fresh spotlight on Iran-related sanctions and the secondary exposures of UK financial institutions and corporates trading in the region. The Office of Financial Sanctions Implementation continues to expand its civil enforcement capability, and forensic accountants are increasingly engaged on asset-tracing, compliance reviews and licensing applications connected to the Russia and Iran regimes.

The most rapid developments are in digital assets. The FCA’s regulatory perimeter for crypto-assets is due to expand with the Financial Services and Markets Act 2000 (Cryptoassets) Regulations 2026, which we expect to drive demand for forensic support in cases involving digital assets, mixed fiat-crypto schemes, and blockchain-based asset recovery. Civil claimants, corporates, and law enforcement seeking to surrender or recover tainted assets increasingly need experts who can combine traditional accounting analysis with on-chain investigation techniques.

Legal Updates: Corporate Accountability Reimagined

The failure to prevent fraud offence under the Economic Crime and Corporate Transparency Act 2023 has been in force since 1 September 2025. No prosecutions have yet been brought, but the SFO has been explicit about its intent to pursue early test cases. Forensic accountants are being engaged to help large organisations design and evidence “reasonable procedures” and to conduct fraud risk assessments and mock investigations.

Second, a 12-month transition window for mandatory Companies House identity verification began on 18 November 2025. This reform is intended to improve the integrity of the register, support beneficial-ownership investigations, and reduce the use of UK shell companies in international fraud schemes.

Third, the Arbitration Act 2025 came into force on 1 August 2025. It introduces a default rule that the law of the seat governs the arbitration agreement, codifies arbitrators’ disclosure obligations, gives tribunals a new summary award power, and clarifies the courts’ powers in support of arbitration. Forensic accountants should expect both faster procedural timetables and earlier engagement on quantum issues to identify claims that could be summarily dismissed.

Summary

As 2026 progresses, the UK is navigating a landscape where headline anxiety has eased but structural disruption remains intense. Economic uncertainty, accelerating AI adoption, and a wave of regulatory reform combine to drive a continuing pipeline of complex disputes and investigations. The forensic accounting industry will remain central to helping clients manage risk, resolve conflict, and restore trust.

The work of the forensic accountant goes beyond numbers; it is about assurance in an increasingly uncertain world.