Under-lit workplaces cause eye strain, accidents and failed inspections — and you cannot argue your way out of a number. We measure illuminance point by point with calibrated meters, map it against BS EN 12464-1 and HSE HSG38, and issue a defensible report that shows exactly where you stand.
Every reading, grid and report is taken and documented against the specific lighting standard your space is held to — not a rule of thumb.
Sets maintained illuminance, uniformity and glare (UGR) targets for every indoor task and space. Our primary reference for office, school and industrial surveys.
The Health and Safety Executive's guidance on average illuminance and minimum measured values by task risk — the benchmark inspectors reach for.
The statutory duty: every workplace must have suitable and sufficient lighting, natural where reasonably practicable. A survey is how you evidence it.
Design and measurement code for roads, car parks and public realm. We survey multi-storey and surface car parks to its lighting classes.
CIBSE application guides — LG7 for offices, plus guides for education, healthcare and industry — inform target-setting where BS EN 12464-1 leaves discretion.
Emergency escape illuminance and duration on escape routes and open areas, measured alongside your normal lighting survey where required.
Maintained illuminance is task-driven, not building-driven. We survey to the number that applies to the activity actually happening in the space.
Maintained illuminance for reading, writing and keyboard tasks per BS EN 12464-1
General office circulation, conference and reception areas
200 lux where continuous occupancy or reading of labels; 100 lux for infrequent handling
300 lux general teaching, 500 lux where evening or detailed work takes place
Parking bays and traffic routes to BS 5489-1; ramps and entries lit higher
General ward lighting, with higher local task lighting for examination
Traffic zones and circulation routes within occupied buildings
Sales floors, precision assembly and inspection benches needing high detail
From a one-off compliance check to an ongoing programme with remediation built in — pick the level of cover that matches your estate.
A calibrated illuminance survey of one site, mapped and reported against the relevant standard.
Scheduled resurveys across a portfolio, with a maintained compliance record per location.
Survey, remediation design and LED relighting works to bring failing areas up to target.
Scoped to your floor area, number of spaces and site count across the estate.
A representative sample of recent work. Full case studies and references available on request.
Grid survey across an open-plan floor to confirm the new LED scheme hit 500 lux maintained before handover.
Aisle-by-aisle readings against a 200 lux target; two aisles fell short and were flagged for relighting.
Teaching spaces surveyed to 300–500 lux with uniformity checks ahead of a refurbishment bid.
Parking decks, ramps and stair cores surveyed to BS 5489-1 lighting classes for a managing agent.
General ward lighting confirmed at 300 lux with local examination lighting checked separately.
Sales floor and till points surveyed against a 750 lux target ahead of a brand relighting programme.
Free-weights and studio areas surveyed to 300 lux, with glare (UGR) noted for mirrored walls.
Low-temperature aisles surveyed for both illuminance and luminaire output loss in the cold.
Normal lighting to 500 lux plus escape-route illuminance measured under mains-fail conditions.
Representative examples — site names withheld for client confidentiality. Ask for references relevant to your sector.
Accredited lighting survey engineers across London and the South East, with every report logged to your compliance record wherever your sites are.
Retainers above are cheaper over time — but every service is also available as a one-off, fixed price upfront.
| Service | Standard | From |
|---|---|---|
| Surveys | ||
| Illuminance survey — single room / area | BS EN 12464-1 | £150 |
| Office floor survey (open-plan, per floor) | BS EN 12464-1 | £295 |
| Warehouse survey (per 1,000 m²) | HSG38 | £320 |
| Car park survey (per deck / surface lot) | BS 5489-1 | £350 |
| Emergency / escape lighting illuminance | BS 5266-1 | £180 |
| Reporting | ||
| Standard illuminance report (PDF) | BS EN 12464-1 | Included |
| UGR glare assessment (per space) | BS EN 12464-1 | £45 |
| Relighting design proposal | CIBSE LG series | £120 |
| Post-works verification resurvey | BS EN 12464-1 | £95 |
| Remediation & Relighting | ||
| LED luminaire replacement (per fitting) | BS 7671 | £65 |
| Aisle / bay relighting (per aisle) | HSG38 | £240 |
| Full space relighting (per office floor) | BS EN 12464-1 | £1,400 |
| Portfolio relighting programme | BS EN 12464-1 | Custom quote |
Single-room and single-site surveys — book a live slot instantly. Multi-site, car park and portfolio work — send an enquiry and we'll come back with a fixed quote.
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We reply within one working day. For anything urgent, call 0203 908 4790.
It depends on the task. BS EN 12464-1 sets maintained illuminance by activity: around 500 lux for offices and detailed reading, 300 lux for classrooms and general circulation, 100–200 lux for warehouse aisles, and 750 lux for fine assembly or retail. We survey to the number that matches the work actually done in the space.
There's no law that names a survey directly, but Regulation 8 of the Workplace (Health, Safety and Welfare) Regulations 1992 requires suitable and sufficient lighting, and HSE HSG38 is the guidance inspectors use to judge it. A calibrated survey is how you evidence that duty if challenged after an accident or complaint.
We take readings on a measurement grid at the working plane — typically desk height indoors or floor level for circulation — using a calibrated, UKAS-traceable lux meter. We record the average and minimum values and the uniformity ratio, then compare each against the standard's target for that space.
Yes. Where required we measure escape-route and open-area illuminance under simulated mains-fail conditions against BS 5266-1 and EN 1838, and can run it alongside the normal-lighting survey in a single visit.
The report flags every area below its target with the shortfall in lux. From there we can produce a relighting design and carry out LED remediation works to bring it up to standard, then verify the result with a post-works resurvey.