The world's largest accountancy firm, Deloitte, has been implicated in falsifying documents to conceal Roman Abramovich's wealth and evade taxes, according to a BBC Panorama investigation.

Accounts signed off by Deloitte in Cyprus reportedly made assets including superyachts, mansions, and private jets, collectively valued at $672 million (£508 million), disappear from Abramovich's company accounts. The firm also appears to have advised on a scheme designed to circumvent a significant tax liability on the oligarch's fortune through the manipulation of financial records.

Barrister Andrew Mitchell KC, an expert in financial services law, reviewed the evidence presented by Panorama and stated that the scheme constituted "straightforward tax evasion" and "couldn't be more blatant." Roman Abramovich's legal representatives have denied that he evaded tax or concealed his fortune. They assert that no evidence has been provided showing he was aware of, authorized, or directed the falsification of any documents, and maintain that it is legitimate to rely on professional advice.

Deloitte Cyprus has stated that it operates in compliance with all applicable laws. These findings emerge from a joint investigation by BBC Panorama and the Bureau of Investigative Journalism, which has uncovered new evidence regarding the management of Abramovich's business empire and raises significant questions about the integrity of his professional advisors.

For almost two decades, Roman Abramovich was a prominent Russian oligarch in the UK, notably purchasing Chelsea Football Club in 2003. Following Russia's full-scale invasion of Ukraine in 2022, he was sanctioned by the UK government as an associate of President Vladimir Putin, leading to his forced sale of the club. Abramovich is reportedly residing in Turkey, a country that has not imposed sanctions against him. In Jersey, £5.4 billion of his assets remain frozen, and a four-year criminal investigation is ongoing.

The evidence stems from a leak of thousands of documents detailing the oligarch's finances and the operations of offshore companies administered from Cyprus between 1995 and 2022. This leak has been central to the International Consortium of Investigative Journalists' Cyprus Confidential investigation, with the BBC and its media partners reporting on the files since 2023.

Previous reporting by Panorama in 2022 highlighted how Abramovich amassed his fortune through a corrupt deal. The current investigation further scrutinizes the financial practices within his business network and the role of his professional service providers.

The leaked documents, combined with expert legal analysis, suggest a deliberate attempt to misrepresent financial holdings to avoid tax obligations. The scale of the assets involved underscores the potential magnitude of the tax evasion scheme.