The National Audit Office reported that, as of 11 September 2025, 2,934 homes with external and internal wall insulation with major issues had been remediated.25 This means less than 10% of the estimated 32,000 to 35,000 homes with major issues had been found and fixed almost one year after TrustMark notified the Department of its concerns in October 2024.26 In written evidence sent to us following the oral evidence session, the Department confrmed that 4,603 homes had been found and fixed by 7 November 2025. However, the Department did not specify whether this includes homes that had minor issues only.27 It therefore may not be comparable to the estimate of 32,000 to 35,000 homes needing remediation due to major issues. Minor issues may affect insulation performance over time, such as weak points in insulation around gas supply pipes, or may not materially affect the insulation at all, such as missing documentation.28