I thank the hon. Member for the intervention. Of course, I will pass on those remarks.

I encourage Members to write to the Department for Energy Security and Net Zero about specific cases. If there is a guarantee in place, my officials will engage with the guarantee agency to see if there is anything that we can do about that particular situation.

The range of Government-backed schemes to install cavity wall insulation are ongoing and lessons have been learned from the complaints that we are discussing today. These complaints, thankfully, are not representative of the experiences of thousands who have used our existing schemes. As I said earlier, in certain circumstances in suitable properties, cavity wall insulation is one of the most cost-effective measures for energy saving. For a relatively small outlay in costs, we know that cavity wall insulation, which costs between £1,000 and £3,000, can save homeowners up to £300 a year.

The hon. Member for Halifax is aware that the Government have made improvements to installation standards as a result of earlier findings. I will summarise the changes we have made, because any response to the problem must include preventing it from happening again. That is why the energy efficiency measures installed under all current Government schemes must be in line with industry best standards established by the British Standards Institution. All installers must be certified to the publicly available specification 2030 standards for any energy efficiency measure that they carry out, including cavity wall insulation, and must demonstrate a high level of competence. The latest revision to the standards was published at the end of September 2023, so I can assure hon. Members that this is a live issue for us and that we continue to refine and improve.

The Department published guidance in October 2019 for consumers who suspect they may have had faulty cavity wall insulation installed in their homes. We urge consumers to follow the guidance to help them avoid becoming victims of fraudulent cavity wall insulation claims.

Outside of Government-funded schemes, I urge all consumers to check the certifications claimed by their installer and what protections or warranties installers can offer before going ahead with work. TrustMark is the Government-endorsed quality mark for retrofit, so its “find an installer” web search will be a good place to start for any consumer, whether the work is Government-funded or not.

As the Minister for Affordability and Skills, I am glad we are discussing this matter today because I think there is a double injustice. People who did the right thing by wanting to install insulation to lower their energy use have suffered from insulation that has failed. That emphasises why we are now required to use the PAS certificate and TrustMark-registered businesses in Government schemes.

A legal firm that was recovering the costs has now collapsed, leaving affected households wondering how this will finally be resolved. That is why I am grateful to the hon. Member for Halifax for bringing the cases in her constituency to my attention, as have other hon. Members. I encourage Members who were unable to attend today to write to the Department about specific cases. My officials will follow up with the relevant guarantee agency to ensure that all due process has been followed.