Compliance
Emergency lighting testing: monthly, annual, and why both
The short answer
Emergency lighting should be function-tested monthly and given a full rated-duration test — normally three hours — annually, under BS 5266-1. The law requires the system to be maintained in efficient working order; the testing regime is how that duty is discharged and evidenced.
Emergency lighting is where the difference between a standard and a statute is most useful to understand. No Act names a monthly test. What the law demands is that safety equipment works; BS 5266 is the recognised way of proving it does, and departing from it means explaining what you did instead.
What is required, and where it comes from
- Legal requirement
Fire safety equipment, including emergency lighting, must be subject to a suitable system of maintenance and kept in efficient working order and good repair.
Source: Regulatory Reform (Fire Safety) Order 2005, Article 17
The Order sets the outcome. It does not set the interval.
- Standard or approved code
Monthly: a short function test of every luminaire and exit sign, confirming it illuminates on loss of supply.
Source: BS 5266-1
- Standard or approved code
Annually: a full-duration discharge test for the system's rated period — three hours in most commercial premises.
Source: BS 5266-1
This is the test that actually proves the batteries. A monthly flick test does not.
- Standard or approved code
Results, defects and remedial action recorded in the emergency lighting logbook.
Source: BS 5266-1
- Risk-based
Duration testing should be scheduled so the system is not left discharged before a high-occupancy period, and recharge time allowed before the premises are relied upon.
Source: Risk-proportionate scheduling
What proves it was done
Compliance is demonstrated with records, not intentions. These are the documents an enforcing authority, an insurer or a purchaser’s solicitor will ask for.
- Emergency lighting logbook with monthly and annual entries
- Certification following the annual duration test
- Defect records showing what failed and when it was rectified
- Design documentation showing the required duration and coverage
- For automatic test systems, the exported results — and evidence someone reviewed them
Where this usually goes wrong
- Monthly tests recorded but the annual duration test skipped, so degraded batteries go undetected
- Duration test cut short once luminaires are seen to illuminate, which proves nothing about the rated period
- Automatic test systems installed and then never reviewed — the data exists, nobody reads it
- Alterations and partitioning that leave escape routes without coverage, with no re-design
- Failed luminaires logged repeatedly across visits and never replaced
What happens if it is missed
Enforcement mirrors fire safety generally: alterations, enforcement and prohibition notices, and prosecution for serious breaches. The practical consequence is worse — emergency lighting is only ever needed in the minutes when nothing else is working.
This page is general information about compliance obligations in commercial property, not legal advice. Legislation cited applies to England and Wales unless stated; Scotland and Northern Ireland differ, particularly on fire safety. Duty holders should confirm their position against current legislation and a competent assessment of their own premises.
Frequently Asked Questions
Common inquiries regarding contract scopes, SLAs, compliance audits, and onboarding.
Monthly function tests and an annual full-duration test, under BS 5266-1. The monthly test is brief; the annual test runs the system for its full rated duration, normally three hours.
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