--- title: "Commercial Electrician London | Office, Retail & Industrial" description: "Commercial electrical services in London. Office fit-outs, 3-phase installations, emergency lighting, EICR testing. NICEIC approved. Call 0203 576 6961." lang: en-GB json-ld: | [ { "@context": "https://schema.org", "@type": "Organization", "@id": "https://24-7electrician.co.uk/#organization", "name": "24/7 Electrical Ltd", "url": "https://24-7electrician.co.uk", "logo": "https://24-7electrician.co.uk/favicon.png", "founder": { "@type": "Person", "name": "Steve Green", "jobTitle": "Founder & Lead Engineer", "honorificSuffix": "MIET, EngTech, LCIBSE" }, "contactPoint": [ { "@type": "ContactPoint", "telephone": "+442035766961", "contactType": "customer service", "areaServed": "GB", "availableLanguage": "English", "hoursAvailable": { "@type": "OpeningHoursSpecification", "dayOfWeek": [ "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday" ], "opens": "00:00", "closes": "23:59" } }, { "@type": "ContactPoint", "telephone": "+447557781201", "contactType": "emergency", "areaServed": "GB", "availableLanguage": "English" } ], "sameAs": [ "https://www.instagram.com/247electricalkent/", "https://www.facebook.com/profile.php?id=100084202661265", "https://www.youtube.com/channel/UCBm6o6WrQ68wI7KRlXyBzbA", "https://www.tiktok.com/@247electricalltd", "https://www.checkatrade.com/trades/247electrical1090623" ] }, { "@context": "https://schema.org", "@type": "WebSite", "@id": "https://24-7electrician.co.uk/#website", "name": "24/7 Electrical Ltd", "url": "https://24-7electrician.co.uk", "publisher": { "@id": "https://24-7electrician.co.uk/#organization" }, "inLanguage": "en-GB" }, { "@context": "https://schema.org", "@type": "Service", "@id": "https://24-7electrician.co.uk/services/commercial-electrical#service", "name": "Commercial Electrical Services", "serviceType": "Commercial Electrical Services", "description": "Commercial electrical installations and maintenance in London. Office fit-outs, retail lighting, 3-phase systems, emergency lighting, EICR testing, PAT testing. NICEIC approved contractors.", "url": "https://24-7electrician.co.uk/services/commercial-electrical", "provider": { "@id": "https://24-7electrician.co.uk/#electrician" }, "areaServed": [ { "@type": "City", "name": "London" }, { "@type": "City", "name": "Croydon" }, { "@type": "City", "name": "Sutton" }, { "@type": "City", "name": "Mitcham" }, { "@type": "City", "name": "Bromley" }, { "@type": "City", "name": "Beckenham" }, { "@type": "City", "name": "Edenbridge" }, { "@type": "City", "name": "Orpington" }, { "@type": "City", "name": "Lewisham" }, { "@type": "City", "name": "Dulwich" }, { "@type": "City", "name": "Streatham" }, { "@type": "City", "name": "Tooting" }, { "@type": "City", "name": "Penge" }, { "@type": "City", "name": "Sydenham" }, { "@type": "City", "name": "Westerham" }, { "@type": "City", "name": "Oxted" }, { "@type": "City", "name": "Caterham" } ], "aggregateRating": { "@type": "AggregateRating", "ratingValue": "4.93", "reviewCount": 152, "bestRating": "5", "worstRating": "1" } }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What commercial electrical services do you provide?", "acceptedAnswer": { "@type": "Answer", "text": "We cover all commercial electrical needs: new installations, office fit-outs, retail lighting, 3-phase systems, distribution boards, emergency lighting, fire alarm systems, data cabling, EV charging infrastructure, EICR testing, PAT testing, and ongoing maintenance contracts." } }, { "@type": "Question", "name": "Can you work outside normal business hours?", "acceptedAnswer": { "@type": "Answer", "text": "Absolutely. We understand that many businesses can't shut down during installation work. We offer evening, weekend, and overnight installation to minimise disruption to your operations." } }, { "@type": "Question", "name": "Do you handle large commercial projects?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Our commercial team handles projects from small office refurbishments to complete electrical installations in industrial facilities. We have experience with retail units, restaurants, warehouses, medical facilities, and office buildings." } }, { "@type": "Question", "name": "What certifications do you hold for commercial work?", "acceptedAnswer": { "@type": "Answer", "text": "We're NICEIC Approved Contractors, qualified for domestic and commercial work. All our commercial electricians hold 18th Edition certification and relevant endorsements for commercial and industrial installations." } }, { "@type": "Question", "name": "Can you help with energy efficiency improvements?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. We advise on LED lighting upgrades, energy monitoring systems, power factor correction, and smart controls that reduce energy consumption. Many clients achieve significant cost savings through efficiency improvements." } }, { "@type": "Question", "name": "Do you provide maintenance contracts?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Planned preventive maintenance keeps your systems reliable and compliant. Contracts include scheduled inspections, emergency lighting testing, and priority response for any issues. We tailor contracts to your premises and requirements." } }, { "@type": "Question", "name": "What is 3-phase power and do I need it?", "acceptedAnswer": { "@type": "Answer", "text": "3-phase power supplies larger electrical loads more efficiently than single-phase. It's required for large motors, commercial kitchens, industrial equipment, and high-power EV charging. If your premises have high electrical demand, 3-phase is likely beneficial." } }, { "@type": "Question", "name": "How do I know if my commercial installation needs upgrading?", "acceptedAnswer": { "@type": "Answer", "text": "Signs include: frequent tripped breakers, insufficient socket outlets, dated distribution boards, lack of RCD protection, inability to support new equipment, or an unsatisfactory EICR. We can assess your installation and advise on necessary upgrades." } }, { "@type": "Question", "name": "Do you install emergency lighting?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. We design, install, and maintain emergency lighting systems to BS 5266. This includes escape route lighting, exit signs, and open area lighting. We also provide the required periodic testing and certification." } }, { "@type": "Question", "name": "What areas do you cover for commercial work?", "acceptedAnswer": { "@type": "Answer", "text": "We cover London and the South East including Croydon, Bromley, Sutton, Mitcham, Beckenham, Edenbridge, and surrounding areas. For larger commercial projects, we can extend our coverage — contact us to discuss." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://24-7electrician.co.uk/" }, { "@type": "ListItem", "position": 2, "name": "Services", "item": "https://24-7electrician.co.uk/services" }, { "@type": "ListItem", "position": 3, "name": "Commercial Electrical Services", "item": "https://24-7electrician.co.uk/services/commercial-electrical" } ] } ] --- 24/7 Emergency Call-Outs • London & South East [info@24-7electrician.co.uk](mailto:info@24-7electrician.co.uk)[Available 24/7 0203 576 6961](tel:02035766961) [![24/7 Electrical Ltd — Emergency Electrician London](/assets/logo-DYN9PriP.png)](/) [Home](/) [About](/about) Residential Commercial Areas [Reviews](/reviews) [Blog](/blog) [Contact](/contact) [Available 24/7 0203 576 6961 ](tel:02035766961)[Book Consultation](/book-a-consultation)[Get a Free Quote](/contact) 1. [Home ](/) 2. [Services](/services) 3. Commercial Electrical Services ![Commercial electrical wiring installation in a London business premises](/assets/commercial-wiring-BTH99IQW.jpg) Free Site Surveys — Fixed-Price Quotes # Commercial Electrical Services Keeping 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. [Request a Free Quote](/contact)[0203 576 6961](tel:02035766961) Last updated: 26 August 2026 · Reviewed by Steve Green, NICEIC-approved electrician 500+ Commercial Jobs NICEIC Approved 24/7 Support BS 7671 Compliant Certified Testing ## 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](/services/ev-charger-installation) for staff and customer parking - [EICR testing](/services/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](/areas/croydon), [Bromley](/areas/bromley), [Sutton](/areas/sutton), and London rely on our commercial expertise. ![Commercial fit-out lighting installation in a London restaurant](/assets/commercial-fitout-lighting-B0PRn43W.jpg) ## 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 Process ## Our Commercial Process From initial survey to ongoing support, we work around your business needs — minimising disruption while delivering reliable electrical infrastructure. 01 1 hr ### Site Survey We assess your premises, understand your requirements, review existing installations, and identify any issues or opportunities. 02 1–3 days ### Design & Quote We design the optimal solution for your needs — capacity planning, energy efficiency, compliance requirements — and provide a detailed fixed-price quote. 03 Half – 5 days ### Planned Installation We schedule work to minimise business disruption. Out-of-hours installation available for premises that can't close during work. 04 Per project ### Implementation Our commercial team completes the installation to BS 7671 standards. All work is coordinated with your operations team. 05 1–2 hrs ### Testing & Handover Full testing, certification, and documentation. We brief your facilities team and provide ongoing support options. Benefits ## 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. FAQ ## Commercial Electrical FAQs Answers to the most common questions about commercial electrical services. ### What commercial electrical services do you provide? ### Can you work outside normal business hours? ### Do you handle large commercial projects? ### What certifications do you hold for commercial work? ### Can you help with energy efficiency improvements? ### Do you provide maintenance contracts? ### What is 3-phase power and do I need it? ### How do I know if my commercial installation needs upgrading? ### Do you install emergency lighting? ### What areas do you cover for commercial work? Signs You Need This ## 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 Indicative Pricing ## 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. Honest Answers ## 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. ![Professional electrician van ready for commercial electrical projects](/assets/cta-background-BI2H9wJG.jpg) Survey Slots Available This Fortnight ## 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. [Book My Site Survey](/contact)[Available 24/7 0203 576 6961 ](tel:02035766961) NICEIC approved · 25+ years' experience · 12-month workmanship guarantee ### 24/7 Electrical Ltd NICEIC-approved electricians. Available 24/7 for emergencies and planned work across London & South East. [0203 576 6961](tel:02035766961) [07557 781201](tel:07557781201) [info@24-7electrician.co.uk](mailto:info@24-7electrician.co.uk) Head Office 51 High Street, Edenbridge, Kent TN8 Croydon Office 104 Friars Wood, Croydon, CR0 9JP [](https://www.instagram.com/247electricalkent/)[](https://www.facebook.com/profile.php?id=100084202661265)[](https://www.youtube.com/channel/UCBm6o6WrQ68wI7KRlXyBzbA)[](https://www.tiktok.com/@247electricalltd) #### Services - [Emergency Repairs](/services/emergency-repairs) - [House Rewiring](/services/house-rewiring) - [EICR Testing](/services/eicr-testing) - [EV Chargers](/services/ev-charger-installation) - [Consumer Units](/services/consumer-units) - [Lighting](/services/lighting-installation) - [Fire Alarms](/services/fire-alarm-installation) - [Garden Lighting](/services/garden-lighting) - [Kitchen & Bathroom](/services/bathroom-kitchen-electrics) - [CCTV](/services/cctv-installation) - [Smart Home](/services/smart-home) - [Commercial](/services/commercial-electrical) - [PAT Testing](/services/pat-testing) - [Maintenance](/services/electrical-maintenance) - [Fault Finding](/services/fault-finding) - [Appliance Repair](/services/appliance-repair) #### Areas We Cover - [Croydon](/areas/croydon) - [Sutton](/areas/sutton) - [Mitcham](/areas/mitcham) - [Bromley](/areas/bromley) - [Beckenham](/areas/beckenham) - [Edenbridge](/areas/edenbridge) - [Orpington](/areas/orpington) - [Penge](/areas/penge) - [Sydenham](/areas/sydenham) - [Lewisham](/areas/lewisham) - [Dulwich](/areas/dulwich) - [Streatham](/areas/streatham) - [Tooting](/areas/tooting) - [Westerham](/areas/westerham) - [Oxted](/areas/oxted) - [Caterham](/areas/caterham) #### Company - [About Us](/about) - [Case Studies](/case-studies) - [Reviews](/reviews) - [Blog](/blog) - [Contact](/contact) - [Privacy Policy](/privacy) - [Terms & Conditions](/terms) - [Cookie Policy](/cookies) © 2026 24/7 Electrical Ltd. 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