BS 5266-1:2016 requires monthly function testing (short) and annual full-duration testing (typically 3 hours) of every emergency luminaire. Results must be logged, with any failures rectified without delay. Responsibility sits with the duty holder — usually the employer or building owner — under the Regulatory Reform (Fire Safety) Order 2005.
Why this matters
Emergency lighting is the difference between a controlled evacuation and a panic in a smoke-logged stairwell. It is one of the cheapest life safety systems to maintain and one of the most frequently found deficient during fire risk assessments.
The legal position
The Regulatory Reform (Fire Safety) Order 2005 requires the Responsible Person to ensure the premises are, so far as is reasonably practicable, equipped with appropriate fire-fighting equipment, fire detectors and alarms — and, by extension, the means for safe evacuation. Emergency lighting is the accepted route to compliance for evacuation lighting in almost all non-domestic and multi-occupied residential premises.
The technical standard is BS 5266-1:2016 Code of practice for the emergency lighting of premises. Insurers and enforcing authorities treat BS 5266 compliance as the evidential benchmark.
Testing regime
Monthly: a short function test of every luminaire and every central battery system. Confirms the changeover works and the lamp illuminates.
Annually: a full-duration test — usually three hours — of every luminaire. Discharge each luminaire from full charge over its full rated duration, then verify recharge.
On installation and after major works: full commissioning test with a photometric survey to confirm design lux levels on escape routes, open areas and high-risk task areas.
The log book
BS 5266-1 requires a permanent record. A digital log accessible to the Responsible Person and the enforcing officer satisfies both BS 5266 and the FSO record-keeping duty. Each entry should carry: date, luminaire reference, test type, result, engineer signature and remedial action.
Choosing a maintainer
Look for BAFE SP203-4 registration (emergency lighting design, installation, commissioning and maintenance). SP203-4 is the third-party certification scheme recognised by insurers and fire authorities and is the fastest signal of competence.
Common failure modes
- Lithium or NiCad batteries reaching end of life around year 4–5
- Retrofit LED lamps installed without emergency modules
- Non-maintained luminaires isolated during refurbishment and never reinstated
- Test key switches removed, forcing full circuit isolation for every monthly test
When it goes wrong
A failed 3-hour test on more than 5% of luminaires is a red flag. Do not rely on rolling remediation — pull forward the full lamp/battery replacement cycle and reset the annual test date.
What to hand your assessor
- Current BS 5266 test certificate
- Monthly test log for the past 12 months
- Photometric commissioning report or as-built drawings
- Battery/lamp replacement schedule
- BAFE SP203-4 certificate for your maintainer
Emergency lighting compliance is procedural, not technical — the tests are easy, the failures come from missed months and unrecorded remediation.
Frequently asked
How often must emergency lighting be tested?
Monthly for a short function test and annually for a full-duration test — typically three hours for maintained systems, per BS 5266-1:2016.
Who is responsible for emergency lighting testing?
The Responsible Person under the Regulatory Reform (Fire Safety) Order 2005 — usually the employer, building owner or managing agent depending on control of the premises.
What is a 3-hour duration test?
A discharge of the emergency luminaire's battery over its full rated duration (usually 3 hours), simulating a mains failure, to prove it will actually run for the required period during an evacuation.
What counts as a failure?
Any luminaire that does not illuminate on switch-off, drops out before its rated duration, or shows charging faults must be logged as a failure and rectified before the next test cycle.
Sources & further reading
