SFO Investigates Three ECO4 Firms, Four Arrests
Summary
On 22 April 2026, the SFO announced a new investigation into three UK companies that worked on Energy Company Obligation 4 (ECO4) contracts between 2022 and 2024. Investigators made four arrests and searched six properties across the UK, including in Cannock, Chilworth, Killamarsh, Southwell, and Wolverhampton. The SFO is requesting information from members of the public who may have knowledge of fraud related to the three companies: Warmfront, JJ Crump, and South Coast Insulation Services.
“On 22 April 2026, the SFO announced a new investigation into three UK companies that worked on Energy Company Obligation 4 (ECO4) contracts.”
Firms engaged in government energy efficiency schemes should ensure their anti-fraud controls, contract documentation, and supply chain verification procedures are robust. The SFO's investigation into ECO4 contractors may signal broader scrutiny of similar energy obligation programs.
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What changed
The SFO has opened a new fraud investigation targeting three companies that performed work on UK government Energy Company Obligation 4 (ECO4) contracts between 2022 and 2024. As part of the investigation, four individuals have been arrested and six properties searched in multiple UK locations. The three companies under investigation are Warmfront (Cannock), JJ Crump (Yorkshire), and South Coast Insulation Services (Fareham).
Companies operating in energy efficiency schemes, insulation installation, and heating contract work funded by government obligations should review their compliance with fraud prevention obligations. The SFO's involvement signals a认真的 enforcement focus on potential fraud in government energy subsidy programs, and peer firms in similar contracting arrangements should assess whether their internal controls and contract procedures adequately mitigate fraud risk.
Archived snapshot
Apr 22, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Warmfront, JJ Crump, and South Coast Insulation Services
On 22 April 2026, the SFO announced a new investigation into three UK companies that worked on Energy Company Obligation 4 (ECO4) contracts.
From: Serious Fraud Office Published 22 April 2026 Case state: Open Date announced: 22 April 2026 On 22 April 2026, the SFO announced a new investigation into three UK companies that worked on Energy Company Obligation 4 (ECO4) contracts between 2022 ans 2024: Warmfront, JJ Crump and South Coast Insulation Services.
Investigators made four arrests and searched six properties across the UK, including in Cannock, Chilworth, Killamarsh, Southwell, and Wolverhampton.
Case Timeline
22 April 2026 – SFO investigation announced. Six properties searched and four individuals arrested in the UK on suspicion of fraud in connection with three companies who worked on Energy Company Obligation 4 (ECO4) contracts.
Request for information
The Serious Fraud Office would like to hear from you if you have information about the three companies being investigated in connection with Energy Company Obligation 4 (ECO4) projects between 2022 and 2024:
- Warmfront (Cannock)
- JJ Crump (Yorkshire)
- South Coast Insulation Services (Fareham) Any information shared will be treated in confidence. Contact us via email confidential@sfo.gov.uk.
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Published 22 April 2026
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