Key Takeaways
- BS 5839-1:2025 replaced the 2017 fire alarm standard on 30 April 2025 — all new installations and modifications must comply
- BS 5266-1 emergency lighting standards updated for 2026 with a six-month grace period
- Commercial EICRs are required every 3–5 years depending on premises type, with penalties up to £40,000
- The "responsible person" under fire safety law is personally liable for compliance failures
- Wire Now is NICEIC-approved and delivers compliance programmes across London, Hertfordshire, and Essex
What Electrical Compliance Does a Commercial Building Need?
Every commercial building in the UK must meet several overlapping electrical and fire safety standards. These are not optional — they are legal requirements under the Electricity at Work Regulations 1989, the Regulatory Reform (Fire Safety) Order 2005, and BS 7671 (the IET Wiring Regulations). Non-compliance can result in fines, prosecution, and invalidated insurance.
The core requirements are:
- Fire alarm system compliant with BS 5839-1:2025
- Emergency lighting compliant with BS 5266-1
- Electrical Installation Condition Report (EICR) every 3–5 years
- Portable appliance testing (PAT) at appropriate intervals
- RCD protection on all socket outlets in accordance with BS 7671
For buildings in London, Hertfordshire, and Essex, Wire Now provides end-to-end compliance programmes covering all of these requirements under a single maintenance contract.
What Changed in Fire Alarm Standards? (BS 5839-1:2025)
BS 5839-1:2025 is the updated British Standard for fire detection and alarm systems in non-domestic buildings. It replaced BS 5839-1:2017 on 30 April 2025 and introduces significant changes to how fire alarms are designed, installed, and maintained.
The key changes include mandatory Visual Alarm Devices (VADs) in buildings where hearing-impaired occupants may be present, a requirement for all fire alarm wiring to use fire-resistant cable including the mains supply, and enhanced commissioning documentation requirements.
Read our detailed breakdown: BS 5839-1:2025: What the New Fire Alarm Standard Means for Your Building
What Are the New Emergency Lighting Rules? (BS 5266-1:2026)
The revised BS 5266-1 standard introduces stricter requirements for risk assessment, system design, and documentation for emergency lighting systems. The updated standards took effect from 1 January 2026, with a six-month grace period for compliance.
Key changes include stronger encouragement to adopt LED luminaires, acceptance of self-testing systems, and mandatory integration between emergency lighting and fire alarm systems under BS 5839-1:2025.
Read our full guide: Emergency Lighting Compliance 2026: What Facilities Managers Need to Know
How Often Do You Need an EICR?
Commercial properties need an Electrical Installation Condition Report (EICR) at regular intervals depending on the type of premises. Offices, shops, and restaurants should be tested every 3 years. Industrial premises every 5 years. These frequencies are recommended by BS 7671 and enforced under the Electricity at Work Regulations 1989.
For rental properties, the maximum penalty for EICR non-compliance increased to £40,000 per breach in 2025.
Read our detailed guide: EICR Testing for Commercial Properties: Frequency, Fines & What to Expect
Who Is the "Responsible Person" Under Fire Safety Law?
Under the Regulatory Reform (Fire Safety) Order 2005, the "responsible person" is the individual who has control of the premises or a degree of control over certain areas. In practice, this is typically the employer, building owner, landlord, or facilities manager.
The responsible person must carry out a fire risk assessment, ensure fire detection and alarm systems are maintained, ensure emergency lighting is tested, keep records of all testing and maintenance, and arrange remedial work when defects are found. Personal criminal liability applies for failures.
What Happens If You're Not Compliant?
The penalties for non-compliance are severe and have increased in recent years:
- EICR non-compliance: Up to £40,000 per breach for landlords (increased from £30,000 in 2025)
- Fire safety breaches: Unlimited fines and up to 2 years' imprisonment under the Fire Safety Act 2021
- Insurance implications: Non-compliant electrical installations can invalidate building insurance entirely
- Prohibition notices: Fire authorities can issue immediate prohibition notices closing premises deemed unsafe
Compliance Checklist for Facilities Managers
Use this checklist to verify your building's compliance status:
- Fire alarm system designed and maintained to BS 5839-1:2025
- Emergency lighting tested and documented to BS 5266-1
- Current EICR in place (within 3 years for commercial, 5 years for industrial)
- PAT testing programme in place for portable appliances
- Fire risk assessment reviewed annually and after any significant changes
- All testing records, certificates, and logbooks maintained and accessible
- Remedial works from any inspection completed within required timescales
- Responsible person identified and trained
How Wire Now Helps
Wire Now is an NICEIC-approved electrical contractor providing compliance programmes across London, Hertfordshire, and Essex. We deliver fire alarm installation and maintenance to BS 5839-1:2025, emergency lighting testing and upgrades, EICR inspections and remedial works, and planned preventive maintenance programmes.
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