SFO arrests four people and executes nationwide raids in £44 million fraud investigation into government-backed ECO4 home retrofit contracts
The Serious Fraud Office (SFO) has arrested four individuals on suspicion of conspiracy to defraud as part of a major investigation into companies delivering government-backed home energy retrofit schemes. Nationwide raids accompanied the arrests. The investigation centres on alleged fraud of approximately £44 million in connection with ECO4 (Energy Company Obligation 4) projects carried out between 2022 and 2024. ECO4 is the UK government's flagship scheme requiring large energy suppliers to fund energy efficiency upgrades — such as insulation and heat pumps — in low-income and vulnerable households. Participating contractors are paid for work delivered under obligation agreements with the energy suppliers. Solicitor General Ellie Reeves KC issued a public statement condemning those 'who want to profit off the back of a scheme designed to help vulnerable people'. The SFO's intervention marks a significant escalation: ECO4 fraud has been under industry and regulatory scrutiny for some time, but formal SFO arrests and coordinated raids signal the watchdog has reached an evidential threshold sufficient to move to the pre-charge investigation stage. The case sits at the intersection of public procurement fraud, construction sector compliance, and energy regulation — with Ofgem the primary regulator overseeing ECO4 obligations on the supply side. Any prosecutions would likely raise complex questions around corporate criminal liability, given the scheme's multi-tier structure of energy suppliers, installers, and subcontractors.
Why this matters
The SFO's ECO4 investigation is commercially significant for several reasons. First, it puts the entire green retrofit supply chain on notice — energy companies with ECO4 obligations and the contractors they have engaged now face potential exposure as either witnesses or subjects, generating immediate demand for regulatory defence and compliance advice. Second, the case raises corporate criminal liability questions under the Criminal Finances Act 2017 (which introduced the offence of failing to prevent facilitation of tax evasion, a model that could extend to fraud prevention obligations under future legislation) and potentially under the Economic Crime and Corporate Transparency Act 2023. Third, Ofgem, as ECO4 scheme administrator, will face pressure to demonstrate it has adequate compliance monitoring — which may trigger a regulatory review of scheme governance. White collar crime, energy regulatory, and public law practices are all engaged.
On the Ground
A trainee supporting a client under SFO investigation would assist with disclosure review and categorisation of documents identified in the SFO's information requests, prepare a chronology of the client's ECO4 contract activity, and coordinate communications with local counsel where raids have affected multiple regional operations.
Interview prep
Soundbite
SFO arrests in a £44m green-scheme fraud put the entire ECO4 supply chain on notice — regulatory defence and corporate crime mandates follow immediately.
Question you might get
“What steps should an energy supplier that contracted ECO4 work to third-party installers take immediately following SFO raids on those contractors?”
Full answer
The SFO has arrested four individuals and executed nationwide raids in a £44 million investigation into alleged fraud within the ECO4 government home retrofit scheme. For law firms, this generates urgent white collar defence work for arrested individuals and companies in the supply chain, as well as compliance review mandates for energy suppliers with ECO4 obligations. The investigation also puts pressure on Ofgem to review how it monitors scheme delivery — a potentially significant regulatory development for the energy sector. The wider picture is that government-backed green economy spending is now firmly within the SFO's enforcement focus, meaning construction and energy sector clients need robust fraud prevention frameworks to avoid liability under an expanding corporate criminal liability regime.
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