What is the Serious Fraud Office being asked to investigate?

MPs have asked the Serious Fraud Office to examine suspected fraud and ECO4 non-compliance linked to government-backed schemes, including the Great British Insulation Scheme. The focus includes false claims, poor-quality installs, and improper sign-offs. Any probe would assess whether controls failed and if criminal conduct occurred across parts of the retrofit supply chain.

How could this affect UK retrofit companies in the short term?

Firms may face contract pauses, tougher audits, and rework obligations. Cash flow can tighten as payments are held back pending verification. Insurers may raise premiums or limit cover. Companies with strong evidence trails, accredited staff, and clean audit records should keep work flowing and could win share from weaker rivals.

What should homeowners do if they suspect poor insulation work?

Contact the scheme administrator and your installer in writing, keep photos and documents, and request an inspection. Use official helplines for complaints and redress routes. Avoid commissioning fixes yourself until assessed, as that may affect liability. Ask for timelines, named contacts, and written confirmation of any agreed remediation.

What signals should investors watch next?

Track the SFO’s decision on a formal probe, audit pass and fail rates, the pace of remediation completions, and any changes to Warm Homes guidance. Also watch insurer pricing, framework suspensions or reinstatements, and evidence requirements. These indicators will shape volumes, margins, and which firms gain or lose share.

Global Market Insights

January 24: SFO Probe Into UK Insulation Schemes Jolts Retrofit Market

ByHuzaifa Zahoor January 24, 2026

The UK retrofit market faces a fresh shock as MPs push for a Serious Fraud Office investigation into the ECO4 insulation scheme and the Great British Insulation Scheme. More than 30,000 homes show major defects, and remediation is behind schedule. We outline what the probe could cover, who bears the costs, and how policy under the Warm Homes plan may change delivery. Investors should expect near-term disruption but also a quality-led reset that could reward compliant operators.