A power failure during a fire alarm activation is not the moment to discover that an escape route is poorly lit, a sign cannot be seen or a battery fitting has failed. For offices, shops, warehouses, HMOs and shared commercial buildings, this commercial emergency lighting regulations guide explains what a compliant system needs to achieve, who is responsible for it and how it should be maintained.

Emergency lighting is not simply a row of illuminated exit signs. It is a life-safety system designed to help people leave a building safely when normal lighting fails. The right design depends on the building, its occupants, its fire strategy and the routes people must use to reach a place of safety.

What commercial emergency lighting regulations require

In England and Wales, the Regulatory Reform (Fire Safety) Order 2005 places duties on the person responsible for a non-domestic premises. This is often the employer, building owner, landlord, managing agent or another person with control over the building. They must take general fire precautions that protect relevant people, based on a suitable and sufficient fire risk assessment.

Emergency lighting may be required where normal lighting failure could make escape unsafe. In practice, this commonly includes protected corridors, stairways, final exits, changes of direction, fire alarm call points, fire-fighting equipment, first-aid points and areas of open floor space where occupants need to find a safe route.

The Fire Safety Order does not prescribe one identical layout for every property. Instead, the system must be appropriate to the risks identified. British Standard BS 5266-1 provides the principal code of practice for emergency lighting system design, installation and maintenance, while BS EN 1838 sets lighting requirements for escape routes and open areas. These standards are widely used to demonstrate that a system has been designed and maintained to an accepted professional benchmark.

For new buildings, extensions and material alterations, Building Regulations guidance can also apply. Approved Document B addresses fire safety provisions, including escape arrangements, and the electrical installation must be selected and installed correctly. A competent electrician should consider the wider fire strategy rather than treating emergency fittings as a separate lighting job.

Emergency escape lighting, explained

Most commercial systems are designed around three functions: escape route lighting, open-area or anti-panic lighting, and high-risk task-area lighting. Escape route lighting helps people identify and use a route to an exit. Open-area lighting helps occupants avoid panic and move towards a route in larger rooms. High-risk task-area lighting supports the safe shut-down of dangerous processes or machinery where an abrupt loss of light could create further danger.

The required duration is another key decision. Many premises need one-hour or three-hour emergency operation, but the correct duration is determined by the risk assessment and evacuation arrangements. A small office with a straightforward evacuation plan may have different needs from a multi-storey block, care setting, warehouse or building that could require phased evacuation.

Maintained and non-maintained fittings also serve different purposes. Maintained fittings are illuminated during normal operation and continue working when the mains supply fails. They are often used for exit signs in premises open to the public, where signs need to be visible at all times. Non-maintained fittings come on automatically only when the normal lighting supply fails. A building can require either type, or a combination of both.

Signs must be visible and meaningful

An exit sign that cannot be seen from the decision point where someone chooses a route is unlikely to support a safe evacuation. Sign positioning, viewing distance, arrows and the actual direction of travel all matter. Signs should show the recognised running-man pictogram and be consistent throughout the building.

Common issues include a sign facing the wrong way, a new partition blocking a sign, or a refurbished office layout changing the route without the emergency lighting design being reviewed. Even a technically sound fitting can become unsuitable after changes to furniture, storage, tenancy layout or internal walls.

A practical commercial emergency lighting regulations guide for property managers

Start with the fire risk assessment. It should identify who uses the premises, whether anyone may be unfamiliar with the layout, where people could become isolated, and how they will escape if normal supplies fail. Visitors, contractors, night staff, people with mobility limitations and lone workers may all affect the required solution.

Next, assess the existing emergency lighting system against the current layout. This should not be limited to checking whether fittings illuminate. A competent survey considers escape routes, exit doors, stairs, changes in level, external escape routes, fire points, signage and the likely duration needed during an incident.

The design should then be documented. Drawings, circuit details, test facilities, fitting locations and commissioning information make future inspections more reliable. They also give the responsible person meaningful evidence that the system was planned rather than added piecemeal.

Installation quality matters as much as fitting selection. Emergency luminaires need suitable charging supplies, correctly arranged circuits and test provisions that allow checks without creating unnecessary risk or disruption. In larger premises, automatic testing can reduce the administrative burden, but it still needs review by a competent person. Automatic reporting does not remove the need to investigate failures or keep records.

Once installed, the system must be commissioned and handed over with operating information and a logbook. The logbook should record tests, faults, remedial work and relevant changes to the building. If a fitting fails its test, the record should show when the issue was found, what action was taken and when compliance was restored.

Testing and maintenance: where compliance often falls short

Emergency lighting batteries degrade over time. Lamps, LEDs, chargers, indicator lights and control gear can also fail. A fitting that appears normal during a quick visual check may not provide light for its required duration when the mains supply is lost.

BS 5266-1 recommends routine inspection and testing, typically including regular visual checks, monthly functional tests and an annual full-duration test. The frequency and method should be appropriate for the equipment, occupancy and manufacturer instructions. For example, a full discharge test may need careful planning so the system can recharge and the building is not left without adequate protection.

A sensible maintenance regime usually covers the following four areas:

• Visual checks to identify damaged fittings, obstructed signs, missing labels and fault indicators.
• Functional tests to confirm emergency fittings operate when the normal supply is interrupted.
• Full-duration tests to confirm the system can run for its specified emergency period.
• Prompt repair and accurate logbook entries when a fault or failed test is found.

Testing must be carried out safely. Staff should not be left in dark circulation areas, and tenants should be told when a test could affect local lighting. In premises with vulnerable occupants or round-the-clock operations, the timing and method of testing may need extra care.

A failed emergency luminaire should not be ignored until the next planned visit. The responsible person should arrange remedial work promptly and consider interim controls if the failed fitting affects a key route. The seriousness depends on the location, the remaining light levels, the occupancy and whether alternative protection is available.

When an existing system needs upgrading

Older systems are not automatically non-compliant, but age can expose weaknesses. Fittings may use obsolete lamps, batteries may no longer hold charge, signs may not meet current pictogram conventions, or years of alterations may have left dark spots on escape routes.

An upgrade is particularly worth considering after a change of use, substantial refurbishment, a new tenancy, internal reconfiguration or a fire risk assessment finding. A warehouse converted into offices, a shop adding a basement stockroom, or an HMO with altered communal areas may all need a revised assessment. Adding more fittings without reviewing the escape plan can waste money and still leave gaps.

LED emergency lighting can lower routine energy use and reduce lamp replacement requirements, but it is not a shortcut to compliance. The fittings still need the right locations, correct duration, appropriate testing and reliable records. The best option is the one that meets the building's actual risk profile and can be maintained properly over its service life.

Choosing a competent electrical contractor

Commercial emergency lighting brings together electrical installation, fire-safety planning and ongoing maintenance. Ask whether the contractor will survey the property, identify shortcomings, provide a clear scope of works, commission the completed system and explain the testing regime. Price matters, but an unclear quotation that omits testing, documentation or remedial work can create avoidable costs later.

For property managers and business owners across Greater London and Kent, PG Electrical can assess emergency lighting requirements, install suitable systems and support planned testing and repairs. Clear records, practical advice and prompt remedial action make compliance far easier to manage across a busy portfolio.

The most useful time to review emergency lighting is before a failed test, a fire risk assessment action or an incident forces the issue. Walk the escape route as if the main lights have gone out, then make sure the system will guide every person in the building to safety.