Commercial Electrical ServicesKeeping Your Business Running
From office fit-outs to industrial installations, we deliver commercial electrical solutions that minimise downtime and maximise reliability. NICEIC approved, fully certified, available 24/7.
Commercial Electrical Solutions
Commercial electrical work demands different expertise than domestic installations. Higher loads, three-phase systems, compliance requirements, and the cost of business disruption all require experienced commercial electricians who understand business needs.
We provide complete commercial electrical services:
- New electrical installations for offices, retail, and industrial premises
- Office fit-outs and refurbishments — from small suites to entire buildings
- 3-phase installations for high-demand equipment and facilities
- Distribution boards and sub-mains for commercial buildings
- Emergency lighting design, installation, and testing
- Fire alarm system installation and maintenance
- Data and network cabling infrastructure
- Commercial EV charging for staff and customer parking
- EICR testing for commercial premises
- PAT testing for portable appliances
- Ongoing maintenance contracts
Who needs commercial electrical services? Office managers, retail operators, restaurant owners, warehouse managers, property managers, and facilities teams across Croydon, Bromley, Sutton, and London rely on our commercial expertise.
The Cost of Electrical Downtime
When your electrical system fails, your business stops. Staff can't work, customers can't be served, equipment sits idle, and revenue disappears. The cost of commercial electrical failures extends far beyond repair bills.
The real impact of poor electrical infrastructure:
- Lost revenue: Every hour without power is an hour without productive work or sales. For high-turnover businesses, this loss dwarfs repair costs.
- Staff costs: Employees still need paying even when they can't work. Overtime may be needed to catch up after restoration.
- Equipment damage: Power surges, voltage fluctuations, and unplanned shutdowns can damage sensitive equipment and corrupt data.
- Reputation damage: Customers expecting service that you can't provide. Missed deadlines. Failed commitments. The intangible costs of unreliability.
- Compliance failures: Expired EICRs, non-functional emergency lighting, and inadequate testing can result in fines, insurance issues, or forced closure.
Prevention beats cure: Regular maintenance, proper installation, and proactive testing identify problems before they cause failures. The cost of professional commercial electrical services is minimal compared to the cost of getting it wrong.
Our Commercial Process
From initial survey to ongoing support, we work around your business needs — minimising disruption while delivering reliable electrical infrastructure.
Site Survey
We assess your premises, understand your requirements, review existing installations, and identify any issues or opportunities.
Design & Quote
We design the optimal solution for your needs — capacity planning, energy efficiency, compliance requirements — and provide a detailed fixed-price quote.
Planned Installation
We schedule work to minimise business disruption. Out-of-hours installation available for premises that can't close during work.
Implementation
Our commercial team completes the installation to BS 7671 standards. All work is coordinated with your operations team.
Testing & Handover
Full testing, certification, and documentation. We brief your facilities team and provide ongoing support options.
Why Choose 24/7 Electrical for Commercial Work
Commercial electrical work requires reliability, compliance expertise, and understanding of business impact. We deliver all three.
Minimal Business Disruption
We understand downtime costs money. Our planning minimises operational impact, with out-of-hours installation available for sensitive environments.
Full Regulatory Compliance
All work meets BS 7671, Building Regulations, and relevant industry standards. We provide complete documentation for your compliance records.
Scalable Solutions
From small offices to large industrial facilities, we design installations that meet current needs while allowing for future expansion.
Certified Testing
EICR testing, PAT testing, emergency lighting verification — all testing services your business needs for compliance and insurance purposes.
Ongoing Maintenance
Planned maintenance contracts keep your electrical systems reliable. Regular inspection prevents failures before they disrupt operations.
Single Point of Contact
One contractor for all commercial electrical needs — installations, maintenance, testing, and emergency response. Simplified vendor management.
Commercial Services in Detail
Office Electrical Installation
Complete electrical fit-outs for office spaces — from power and data to lighting and climate control infrastructure. We design efficient layouts, install adequate socket provision, and ensure compliance with Building Regulations. Cat5e/Cat6 data cabling integrated with electrical installation.
Retail Lighting and Power
Retail environments demand lighting that attracts customers and shows products effectively. We design and install retail lighting solutions — track lighting, feature lighting, display illumination — alongside the robust power infrastructure retail operations require.
3-Phase Installations
High-demand commercial equipment often requires 3-phase power. We design and install 3-phase systems for commercial kitchens, manufacturing equipment, large HVAC systems, and high-power EV charging infrastructure. Includes liaison with DNOs for supply upgrades.
Emergency Lighting Systems
Building Regulations require emergency lighting in most commercial premises. We design systems to BS 5266, install maintained or non-maintained fittings, and provide the regular testing your compliance requires.
Planned Maintenance Contracts
Regular inspection and testing catches problems before they cause failures. Our maintenance contracts include scheduled EICR testing, emergency lighting checks, PAT testing, and priority response for any issues. Tailored to your premises and operational requirements.
Commercial EV Charging
Workplace EV charging for staff and visitor parking. We design installations that work with your available power supply, include appropriate payment/access systems, and meet Workplace Charging Scheme requirements where applicable.
Commercial Electrical FAQs
Answers to the most common questions about commercial electrical services.
Signs Your Commercial Premises Need Attention
Commercial electrical issues rarely stay small — they end in downtime, insurance claims or HSE notices. Catch them early.
The Electricity at Work Regulations 1989 place a legal duty on employers to maintain electrical systems in a safe condition — failure can mean unlimited fines and director liability.
- Your last commercial EICR is more than 5 years old (3 years for industrial)
- Emergency lights have never been duration-tested or logged
- You're paying for halogen, fluorescent or sodium lighting you could replace with LED
- Distribution boards are full, with no spare ways for new equipment
- You're planning a fit-out, expansion or change of use
- Staff are using extension leads to compensate for poorly placed sockets
- You've had nuisance trips affecting tills, IT or production lines
- Your insurer or landlord is asking for up-to-date certification
Commercial Electrical Pricing
Indicative ranges for common commercial works. Every project is quoted bespoke after a free site survey.
| Job Type | Typical Price | What's Included |
|---|---|---|
| Small office fit-out (up to 50 sqm) | £3,500–£8,500 | Power, data, lighting, emergency lighting and certification. |
| Retail unit refit (lighting + power) | £4,500–£12,000 | Including new sub-distribution, LED retail lighting and till / EPOS circuits. |
| Commercial EICR (per fuse-board) | From £350 | Out-of-hours testing available to avoid disruption to trading. |
| LED lighting upgrade (typical office floor) | £25–£55 per fitting | Supply and install with full warranty — payback typically under 24 months on energy alone. |
| Emergency lighting install / upgrade | From £950 | Including 3-hour duration testing and BS 5266 certification. |
| Periodic maintenance contract | From £45 per month | Quarterly inspections, priority response and discounted reactive works. |
Prices shown are typical guide ranges for Greater London and the South East as of 2026. Every job is quoted in writing on a fixed-price basis after a free site assessment — you only pay the figure we agree, with no hidden extras.
Worried About Commercial Electrical Work?
We work around your trading hours, not the other way round. Here's how.
"We can't afford to close for the work."
Most works are scheduled out-of-hours, overnight or in weekend windows. We isolate one circuit at a time so the rest of your operation keeps running, and we work to a written method statement agreed with you.
"How do I know you can handle the scale of our site?"
We currently maintain offices, retail chains, schools, MOT centres and light industrial units across South London. References, RAMS, insurance and SSIP / CHAS membership are provided up front.
"What about coordination with our facilities team?"
You get a single named project manager from survey to sign-off. We integrate with your CAFM system or works-order process — no chasing multiple engineers for updates.
"Will the certification stand up to insurer scrutiny?"
All work is tested to BS 7671, certified by NICEIC-registered engineers, and supplied with the test schedules, asset registers and digital O&M packs your insurer or auditor will request.
Book Your Free Commercial Electrical Survey
Whether you need a one-off fit-out or ongoing maintenance, get a clear, costed plan in front of you this week — and lock in 2026 pricing before the next round of supply increases.
NICEIC approved · 25+ years' experience · 12-month workmanship guarantee