Lighting the way forward: What you need to know about BS 5266-1:2025
Emergency lighting is one of the quiet heroes of building safety. Most of the time it goes unnoticed, but when it is needed, it provides clarity, reassurance, and direction.
In workplaces, shopping centres, hospitals, and transport hubs, well-designed emergency lighting ensures that people can move safely, find exits, and remain calm even when the unexpected happens.
The publication of BS 5266-1:2025 Emergency lighting. Code of practice for the emergency lighting of premises, the revised British Standard for emergency lighting, is therefore an important step forward. The new edition does more than refresh guidance. It expands the scope of the standard, reflects advances in technology, and supports a more complete approach to safety in modern buildings.
For those responsible for people and premises, this is an opportunity to improve resilience, demonstrate best practice, and strengthen confidence in the systems that protect us all.
What is BS 5266-1:2025?
BS 5266-1:2025 is the latest edition of the UK’s code of practice for the emergency lighting of premises.
First developed decades ago, the standard has long provided guidance to ensure that systems meet the performance requirements necessary for safety. The 2025 revision reflects both changes in European standards and the practical experiences of professionals who design, install, and operate emergency lighting systems.
The document is more than a set of technical instructions. It is a framework for best practice. It aims to promote a consistent approach across different categories of premises while accommodating variations in hazard levels and the familiarity of occupants with their environment.
By following its recommendations, building owners, contractors, and regulators can achieve a higher degree of uniformity, reducing confusion and risk.
Key changes in the BS 5266-1:2025 revision
The most notable update in BS 5266-1:2025 is its expanded scope. In addition to emergency escape lighting, the traditional focus of previous editions, the new version now explicitly addresses local area lighting and standby lighting.
Emergency escape lighting continues to cover the illumination needed to guide people to a safe exit during an emergency.
Local area lighting provides illumination to specific points or tasks, ensuring people can safely complete vital activities in the event of power failure.
Standby lighting is designed to allow normal activities to continue when the main power supply is lost.
This broader view acknowledges the realities of modern building use. In many facilities, evacuation is not the only scenario to consider; sometimes, protecting occupants who remain in place or enabling continuity of essential operations is just as critical.
The 2025 revision also aligns BS 5266-1 with changes in EN 1838 and EN 50172, the European standards that define lighting requirements. This alignment strengthens the UK’s consistency with international best practice while ensuring that local application remains clear and practical.
Finally, the new edition places stronger emphasis on uniformity of application. The recommendations have been drawn up to encourage a consistent level of safety, regardless of building type, while still acknowledging differences in risk profile.
Who should use BS 5266-1:2025?
BS 5266-1:2025 is not just for lighting designers. It is relevant to a broad community of professionals and organizations, including:
Local authorities and regulators, who need clear benchmarks for enforcement and compliance.
Insurers and trade bodies, who rely on consistent standards to evaluate risk.
Safety and fire professionals, who are responsible for safeguarding people in diverse environments.
Engineers, contractors, and developers, who must incorporate emergency lighting into projects at every stage of design and construction.
Responsible persons under UK fire safety legislation, who carry legal duties to ensure safe evacuation and occupant protection.
Essentially, if a building has a public or communal aspect, from offices and retail premises to healthcare facilities and transport hubs, BS 5266-1:2025 provides the guidance needed to manage emergency lighting effectively.
Looking to strengthen your approach even further? Browse our full portfolio of built environment standards - from fire safety and risk management to construction competence frameworks - and make sure your organization is meeting the latest best practice across every area of building safety.
What are the benefits of adopting BS 5266-1:2025?
Adopting the new standard delivers benefits beyond compliance.
First and foremost, it enhances life safety, ensuring that people can leave a building safely or remain protected if evacuation is not possible. It also provides peace of mind for organizations, knowing that systems have been designed and installed according to current best practice.
The standard also promotes efficiency and consistency. By following a common framework, contractors and designers can reduce misunderstandings, improve interoperability, and streamline maintenance. For multi-site organizations, this uniformity is especially valuable, enabling consistent levels of safety across a diverse portfolio.
Finally, the adoption of BS 5266-1:2025 supports reputation and resilience. Organizations that can demonstrate alignment with the latest standards show stakeholders, from employees to regulators, that they take safety seriously. This not only reduces liability but also strengthens trust.
Looking ahead in UK building safety
The revision of BS 5266-1 is part of a broader trend in building safety: the move towards more comprehensive, integrated approaches. Just as fire detection, suppression, and evacuation strategies have become more sophisticated, so too must emergency lighting evolve.
BS 5266-1:2025 represents a step forward in this journey. It recognizes that safety is not only about getting people out but also about supporting them if they must stay in, ensuring continuity of operations, and reducing the risk of panic. It places the UK at the forefront of best practice while aligning with international developments.
By adopting the standard, you not only comply with regulations but also demonstrate a commitment to protecting people, reducing risk, and promoting trust. Whether you are a regulator, contractor, designer, or responsible person, the message is clear: now is the time to align with BS 5266-1:2025.