Emergency Lighting Certificate: What UK Law Actually Requires
Two different certificates, two different tests, and one standard that was quietly withdrawn last year. Here is what a building owner in London actually needs on file.
An emergency lighting certificate is the written record that a building’s escape lighting has been installed, inspected or tested to BS 5266-1. There are two kinds. A completion certificate is issued once, when a system is installed or significantly altered. A periodic inspection and test certificate is issued after testing, most often following the annual full-duration test.
Neither is named in legislation. What the law names is the duty to keep the system working — and the certificate is how you prove you have met it.
What an emergency lighting certificate actually is
Most people ring us asking for “the emergency lighting certificate”, singular. In practice the paperwork comes in three parts, and knowing which one you are missing saves a lot of time.
The completion certificate
Issued by the installer when a new emergency lighting system is commissioned, or when an existing one is significantly altered or extended. It is a one-off document. It should not arrive on its own: a completion certificate is properly accompanied by a signed declaration, the photometric design data for the installation, and the system log book.
If you have taken over a building and there is no completion certificate anywhere in the handover file, that is worth chasing. Without the design data, nobody can later prove the system was designed to cover the escape routes properly in the first place.
The periodic inspection and test certificate
This is the recurring one, and the one most building owners mean. It records a test of an existing system — typically the annual full-duration test — and states what was found, what failed, and what was put right. If a major alteration has been made, this certificate accompanies the completion certificate rather than replacing it.
The log book
The log book is not a certificate, and it is the document people most often neglect. It is the running record of every monthly test, every annual test, every fault and every repair. The installer should supply it with the system.
Here is the part that catches people out: a certificate proves a test happened on one day. The log book proves the system has been looked after all year. A fire officer who asks for your paperwork will usually want both, and an empty log book undermines a perfectly good certificate.
| Document | When it is issued | How often | Who holds it |
|---|---|---|---|
| Completion certificate | On installation, or after significant alteration | Once per installation | Building owner / Responsible Person |
| Periodic inspection & test certificate | After testing an existing system | Normally annually | Building owner / Responsible Person |
| Log book | Supplied with the system, filled in continuously | Monthly and annually | Kept on site |
Who is legally responsible
The duty sits with the Responsible Person under the Regulatory Reform (Fire Safety) Order 2005. In a workplace that is the employer, together with anyone else who has control of part of the premises — which in practice means the occupier, the owner, or the managing agent.
The Order requires that fire safety facilities, equipment and devices are subject to a suitable system of maintenance, and are kept in efficient working order and in good repair. Emergency lighting is squarely within that. The Order also makes it an offence to falsify records kept under it, which is worth knowing before anyone is tempted to tick a month of flick tests that never happened.
If you are a managing agent, the duty does not quietly transfer to your contractor when you hire one. You remain the Responsible Person. What a good contractor gives you is the evidence that you have discharged the duty — which is precisely why the paperwork matters as much as the testing.
How often emergency lighting must be tested
Two tests, two rhythms. Both are recorded in the log book.
The monthly function test
A short test — often around 30 seconds — that simulates a mains failure and confirms every emergency fitting actually switches on and illuminates. It is done with the system’s secure device key, commonly called a fish key, rather than by switching off the mains lighting circuit, because killing the lighting supply to an occupied building creates a hazard of its own.
The result is recorded. Any fitting that does not light is reported to the Responsible Person and repaired.
The annual full-duration test
The system is run entirely on battery for its full rated duration — three hours in most UK premises — and every fitting must stay lit for the whole period. This is the test that produces the certificate most people are chasing.
Two practical consequences. First, the test takes the best part of a working day, so it is usually booked outside occupied hours. Second, once the batteries have been fully discharged they need time to recharge, and during that window the system is not giving full protection. A contractor who turns up at 4pm on a Friday and leaves at 5pm has not done a full-duration test.
| Test | Frequency | Duration | Output |
|---|---|---|---|
| Function test (“flick test”) | Monthly | Short — around 30 seconds | Log book entry |
| Full-duration test | Annually | Full rated duration, usually 3 hours | Certificate + log book entry |
BS 5266-1:2025 — and why your old certificate may name a withdrawn standard
This is the part most pages on this subject have not caught up with.
BS 5266-1:2016 was withdrawn on 31 October 2025 and replaced in its entirety by BS 5266-1:2025. The 2025 edition has been the current code of practice for emergency lighting for a year now.
The headline changes:
- A wider scope. The standard now covers local area lighting and standby lighting alongside emergency escape lighting, rather than escape lighting alone.
- Alignment with the European standards. The revision brings BS 5266-1 into line with changes in EN 1838 and EN 50172.
- Escape routes measured across the floor, not down the middle. The 2016 edition was built around illuminance along the centre line of an escape route. The 2025 edition expects the required level across the full width of the escape route floor. In an older building with lights spaced down a corridor centre, that is the change most likely to show up a shortfall.
Look at the edition cited on your most recent certificate. A certificate issued while the 2016 edition was current is a perfectly valid record of what was tested at the time — it does not become void. But anything issued after 31 October 2025 should be referencing the 2025 edition. If it still says 2016, ask your contractor which edition they actually tested to.
There is detail in the 2025 revision beyond the above — including how light output is verified in practice — where the published commentary is still inconsistent. We would rather send you to the standard itself than repeat a figure we cannot stand behind. If a specific requirement affects a decision you are making, ask us and we will check it against the current text of BS 5266-1 before we answer.
Who can issue an emergency lighting certificate
There is no single government licence for emergency lighting certification, which is exactly why the market is uneven. The real test is competence: whoever signs needs the electrical qualifications, a working knowledge of BS 5266-1, and the test equipment to back up the signature.
In practice, most building owners use an electrical contractor registered with a scheme such as NICEIC. The registration is independently assessed and re-assessed, which means somebody other than the contractor has checked their work — and it is the thing insurers, managing agents and fire officers recognise without further argument.
Two things worth asking any contractor before you book:
- Will the annual test be a genuine full-duration test, and when will they run it?
- Which edition of BS 5266-1 will the certificate reference?
What a proper certificate must contain
Before you file it, check it actually says something. A certificate worth keeping covers:
- The address and a clear description of the premises or the part covered
- The edition of BS 5266-1 the work was carried out to
- The date of the test and the type of test performed
- The extent of the system covered — and, importantly, anything excluded
- The results, including every fitting that failed
- Remedial work carried out, or recommended with a timescale
- The name, signature and qualification or registration number of the person responsible
- The date the next test falls due
The two fields most often left blank are the exclusions and the next-due date. A certificate that quietly omits the basement store room is not wrong, but it is not covering the basement store room either — and nobody discovers that until it matters.
What happens if you haven’t got one
Nothing, until something happens. That is the difficulty with fire safety paperwork: the cost of not having it is zero on every ordinary day and very high on one particular day.
When it does matter, it tends to matter in three ways at once. A fire safety inspection finds no evidence the system has been maintained. An insurer handling a claim asks for the maintenance records. And enforcement under the Fire Safety Order can carry substantial fines and, for the most serious breaches, imprisonment.
The more common and more mundane version: a building changes hands, or a tenant’s solicitor asks for the fire safety file during a lease renewal, and the deal stalls while somebody tries to assemble five years of missing records. Getting the system tested and the log book started takes a day. Reconstructing a history you never kept takes months, and sometimes cannot be done at all.
Common questions
Is an emergency lighting certificate a legal requirement?
The certificate itself is not named in law. What is named is the duty. The Regulatory Reform (Fire Safety) Order 2005 requires the Responsible Person to keep fire safety equipment in efficient working order and in good repair, and to be able to show it.
A certificate and a completed log book are how that duty is evidenced in practice — and they are the first documents a fire officer or an insurer asks to see.
How often do you need an emergency lighting certificate?
A full-duration test is carried out annually, and that is the test most people mean when they say “the yearly certificate”. On top of that, a short function test is carried out every month and recorded in the log book.
A completion certificate is separate again: issued once, when a system is first installed or significantly altered.
Who can issue an emergency lighting certificate?
There is no single licence for it. The test is competence — the electrical qualifications, the working knowledge of BS 5266-1 and the test equipment to back the signature.
Most building owners use a contractor registered with a scheme such as NICEIC, because the registration is independently assessed and is recognised by insurers and managing agents without further argument.
How long does the annual emergency lighting test take?
In most UK premises the rated duration is three hours, so the lights must stay lit for the full three hours before the system passes. The batteries then need time to recharge, during which the system is not giving full protection.
That is why the annual test is usually booked outside occupied hours.
What happens if an emergency light fails the test?
The failure is recorded, the fault is repaired as soon as reasonably possible, and the affected fitting is retested. A certificate is not withheld for ever because one battery has aged — it reports what was found.
What matters is that the fault is logged and the remedial work is evidenced.
Does BS 5266-1:2025 mean my existing certificate is invalid?
No. A certificate issued while the 2016 edition was current is a true record of what was tested at the time.
But BS 5266-1:2016 was withdrawn on 31 October 2025, so anything issued after that date should reference the 2025 edition. If your most recent paperwork still cites the withdrawn edition, it is worth asking your contractor which edition they tested to.
Do you cover emergency lighting across London?
Yes — blocks of flats, offices, shops, pubs and managed portfolios across Central and North West London, from Chiswick to Canary Wharf. We handle emergency lighting testing and installation alongside EICRs and fixed wire testing, so one visit can cover more than one certificate where that suits the building.
Need your emergency lighting certified?
We test, certify and keep the log book straight for buildings across Central and North West London. Tell us what the building is and we will tell you what it needs.
Written and reviewed by Sam’s Electrical Limited, NICEIC Approved Contractor 604644000. Last reviewed 27 October 2026. This page is general guidance, not a substitute for the current text of BS 5266-1 or professional advice on your specific building.