A data-driven review of Building Safety Regulator enforcement actions throughout 2025 and early 2026. Which issues are attracting the most attention, from defective fire doors to poor information?. BSR Enforcement Tracker: Analysing Prohibition and Improvement Notices The Building Safety Regulator (BSR) has transitioned from a nascent entity to a formidable enforcement body, as evidenced by a comprehensive analysis of its prohibition and improvement notices issued throughout 2025 and early 2026. This data driven review reveals a clear and emerging pattern of regulatory focus, highlighting critical areas where the construction and building management industries are consistently falling short. From defective fire doors to systemic failures in information management, the BSR is now actively wielding its powers under the Building Safety Act 2022 (BSA 2022), demanding a fundamental shift in how building safety is conceived, delivered, and maintained across the UK. Background The genesis of the BSR lies in the tragic Grenfell Tower fire and the subsequent Hackitt Review, which exposed systemic failings in the UK's building safety regulatory framework. The BSA 2022, enacted in response, established the BSR within the Health and Safety Executive (HSE) with sweeping powers to oversee the safety and performance of all buildings, particularly higher risk buildings (HRBs). These powers include the ability to issue improvement notices, requiring specific actions to rectify contraventions of relevant requirements, and prohibition notices, which can halt work or prevent occupation where there is a risk of serious personal injury. Prior to 2025, the BSR’s activities were largely focused on establishing its operational structures, developing guidance, and initiating the registration of HRBs. However, as the new regulatory regime matured, and with the "Gateway 2" and "Gateway 3" processes becoming firmly embedded for HRBs, the BSR's enforcement arm has become increasingly active. This period marks a significant shift from proactive guidance to reactive enforcement, indicating a clear intent to ensure compliance through robust oversight and, where necessary, punitive measures. The data analysed here represents a critical barometer of the BSR's priorities and the industry's ongoing challenges in adapting to the heightened safety standards. Key Developments Our analysis of BSR enforcement notices reveals several recurring themes and specific areas attracting significant regulatory attention: 1. Fire Door Integrity (Regulation 38 and RRO 2005): Unsurprisingly, defective fire doors remain a predominant concern. A substantial proportion of improvement notices, and a worrying number of prohibition notices, relate to the inadequate specification, installation, maintenance, or repair of fire doors. Common issues cited include incorrect gaps, missing or damaged intumescent strips and smoke seals, inappropriate hardware, and doors that fail to self close. Enforcement actions often reference Regulation 38 of the Building Regulations 2010 (requiring fire safety information to be provided to the responsible person) and breaches of the Regulatory Reform (Fire Safety) Order 2005 (RRO 2005), particularly concerning the duty to ensure fire safety equipment is maintained. This indicates a persistent problem across both new builds and existing HRBs, highlighting a critical failure point in passive fire protection. 2. Information Management Deficiencies (BSA 2022, Part 3): A significant number of notices address failures in information management, particularly regarding the "golden thread" of information required under the BSA 2022. This includes instances where crucial safety information is incomplete, inaccurate, inaccessible, or not properly handed over between dutyholders. The BSR is clearly prioritising the establishment of robust information management systems, recognising that a lack of comprehensive and reliable data underpins many other safety failings. This extends to inadequate fire risk assessments (FRAs) and a failure to provide sufficient detail on the fire strategy, as required by Approved Document B (ADB). 3. Structural Safety and Building Materials: While less frequent than fire door issues, several prohibition notices have been issued concerning structural integrity and the use of inappropriate or non compliant building materials. These often relate to issues identified during the Gateway 2 and 3 processes, or through proactive inspections of existing HRBs. The BSR is scrutinising the specification and installation of critical structural elements and cladding systems, ensuring compliance with relevant British Standards such as BS 9991 (fire safety in residential buildings) and BS 9999 (fire safety in non residential buildings). 4. Competence and Dutyholder Responsibilities: A recurring thread through many notices is the failure of dutyholders to demonstrate adequate competence or to fulfil their responsibilities under the BSA 2