Commercial Electrician London
Keeping London Businesses Safe, Compliant & Fully Operational
From restaurants in Soho to offices in Canary Wharf, electrical safety and compliance isn’t optional, it’s essential. Outdated electrical systems and missed inspections can lead to serious disruption, invalidate insurance, and put your people and property at risk.
At Prolec Electrical Services, we specialise in keeping London’s commercial buildings powered, safe, and up to date. Whether it’s a routine EICR in a historic Westminster building, installing emergency lighting in a City office block, or upgrading security systems in a retail unit on Oxford Street, we take care of it properly, efficiently, and with minimal disruption.
Our NICEIC approved contractors have years of experience working across all sectors. We have a deep understanding of the unique demands of London’s diverse business landscape. Our comprehensive range of commercial electrical services is tailored to support your business – big or small – giving you peace of mind and confidence in your electrical safety.

Our Service Areas
Camden
Expert commercial electricians in Camden delivering EICRs, lighting upgrades, and compliance for busy office spaces.
City of London
Providing EICRs, electrical maintenance, and upgrades for corporate offices in the City’s financial district.
Islington
Trusted electricians in Islington offering compliance inspections and lighting solutions for modern multi-office business premises.
Tower Hamlets
Specialist electrical services in Tower Hamlets for offices, corporate HQs, and large commercial developments.
Westminster
Professional EICR inspections and lighting upgrades for high-profile offices and institutions across Westminster’s business districts.
Wandsworth
Reliable commercial electrical solutions in Wandsworth for offices, business parks, and large-scale corporate facilities.
Hammersmith
Commercial electricians in Hammersmith delivering EICRs and energy-efficient upgrades for offices and corporate headquarters.
Southwark
Electrical inspections, maintenance, and lighting upgrades for Southwark’s vibrant office and business community.
Hackney
Serving Hackney’s creative and corporate offices with electrical compliance checks and advanced lighting installations.
Chelsea
High-quality electrical services in Chelsea for premium offices, galleries, and large commercial properties.
Kingston upon Thames
Expert commercial electricians in Kingston upon Thames providing EICRs, compliance, and upgrades for corporate offices
Lambeth
Professional electrical services in Lambeth supporting offices, institutions, and multi-site businesses with reliable compliance inspections.
Greenwich
Trusted electricians in Greenwich delivering EICRs, maintenance, and lighting upgrades for offices and large commercial properties.
Croydon
Commercial electricians in Croydon offering inspections, compliance testing, and energy-efficient upgrades for corporate office buildings.
Newham
Specialist electrical services in Newham providing EICRs and upgrades for offices, retail centres, and business hubs.
Ealing
Serving Ealing’s offices and business parks with expert electrical compliance and upgrades.
Richmond upon Thames
Trusted electrical services for corporate HQs and offices across Richmond and Chiswick Park.
Hounslow
Supporting Hounslow’s global businesses near Heathrow with specialist testing and upgrades.
Barnet
Delivering EICRs and electrical services for schools, healthcare, and offices in Barnet.
Surrey
Commercial electrical testing and upgrades for Surrey’s major HQs and business parks.
What services do commercial electricians offer?
We genuinely care about partnering with our clients to deliver excellent results in electrical services. We listen to your challenges, we understand and respond by giving you the support you need; providing an outstanding standard of design and installation from start to finish. Whether you need electrical repairs and maintenance services or a whole new lighting design or electrical installation in your commercial property, you can trust our expert team deliver high quality work.
What we deliver
Commercial Fit Out
Our complete electrical fit-out service ensures your project is a success from start to finish. We handle everything from lighting and power to data and safety systems, delivering a safe, compliant, and efficient workspace.
Pat Testing For Businesss
Looking for a PAT testing company? We offer comprehensive PAT testing services by qualified electricians (PAT testers) for businesses across London, England.
Electrical Testing
We conduct full electrical inspections for business owners in London. Ensure your commercial properties are safe and compliant with EICR testing.
Electrical Compliance
Our electrical compliance services check and ensure that your electrical installations, electrical equipment and systems meet legal regulations, health and safety standards, and testing requirements.
Emergency Lighting Maintenance
Do you need a reliable, London-based team to maintain and test your emergency lighting systems? Chat to us about your annual test and monthly testing for emergency lighting and fire alarms.
Commercial Electrical Installation
Our experienced team provides high quality commercial electrical services. We design, install and maintain electrical systems for commercial premises, from high end commercial buildings to schools and historic buildings.
Commercial EV Charging Installation
We install commercial electric vehicle chargers. Our experienced team will provide a quality service installing and maintaining your commercial EV charging points.
LED Lighting Upgrades
It’s time to upgrade your existing lighting to LED light sources. Reduce your energy consumption with high quality LED lighting upgrades in your business premises.
Specialist Services
From ensuring the reliability and safety of your electrical systems with our comprehensive busbar inspections to detecting hidden issues through advanced thermal imaging, we provide proactive solutions to keep your operations running smoothly.
We’re a client-focused team who truly cares about delivering the results you need.

Collaboration
We work closely with our clients, ensuring that every project is tailored to meet your specific requirements. Our team values open communication and a collaborative approach to problem-solving, guaranteeing the best outcomes for your business.
Experience
We’re a team of qualified, experienced commercial electrical contractors and electrical engineers. We understand the complexities of electrical systems and are equipped to handle a wide range of challenges with precision and skill.
Success
We measure our success by your satisfaction. We are committed to providing exceptional service and outstanding results, ensuring that your electrical systems are both efficient and reliable, ultimately contributing to your business’s success.
Why choose our commercial electricians in London?
Future-focused
We invest in the people, processes and technology to drive our business forward
Client-focused
Our approach is collaborative, adaptable, agile and firmly focused on providing what you need
Results-focused
We create strong partnerships to achieve the best results whilst delivering value to all involved
Sustainability-focused
We recognise our responsibilities and strive to reduce our environmental footprint and increase our social impact


Who we work with
We tailor our services to meet the unique needs of each client, whether it’s a commercial building or commercial premises, by leveraging our technical expertise, ensuring strict compliance with safety standards, and providing bespoke solutions. Whether it’s maintaining uptime in data centres, enhancing security in banks, modernising historic buildings, or optimising efficiency in industrial settings, our collaborative approach ensures that we deliver reliable and cost-effective electrical solutions designed specifically for each business. Our commitment to excellent service guarantees that your commercial premises will benefit from top-tier electrical expertise.
Data Centres
Prolec understands the critical importance of uptime and security in data centres. We provide robust electrical solutions designed to ensure uninterrupted power supply, optimal efficiency, and stringent safety standards to protect your data infrastructure.
Financial Institutions & Banks
For financial institutions and banks, Prolec delivers precise and reliable commercial electrical work that supports your complex operational needs. Our expertise ensures secure, energy-efficient installations and maintenance to uphold the integrity and security of your financial transactions.
Universities & Schools
Prolec caters to the unique requirements of educational institutions by offering comprehensive electrical solutions that enhance learning environments. From advanced lighting installations to reliable power for technology and labs, CCTV installation, and electrical maintenance, we ensure a safe and effective infrastructure for students and staff.
Historic Buildings
When encountering electrical issues in historic buildings a careful approach and expert knowledge is needed to carry out upgrades and repairs. At Prolec, we specialise in upgrading electrical systems to modern standards while maintaining the architectural integrity, ensuring both safety and functionality without sacrificing the building’s heritage.
Offices
Prolec provides tailored electrical services for offices and commercial property, focusing on creating efficient, comfortable, and safe working environments. From upgrading your lighting installation to be more energy-efficient to complete rewiring of power and data cabling, we support the productivity and well-being of your workforce.
Industrial & Manufacturing
We support an array of commercial buildings, be it a warehouse, factory, or manufacturing facility, with expert electrical services that ensure safe, efficient, and reliable solutions tailored to enhance productivity and support business growth.
Frequently Asked Questions
An Electrical Installation Condition Report (EICR) is a crucial inspection of your property’s electrical systems to ensure they are safe and compliant with national standards. For most commercial properties, an EICR is legally required at least every five years, though businesses with heavy public use or specialised equipment may need more frequent checks.
Yes, we have electricians experienced in working on listed or historic properties. They are skilled at upgrading electrical systems to meet modern safety standards while respecting and preserving the building’s unique structural and aesthetic character.
Health and safety regulations require employers to maintain all electrical equipment in a safe condition. While not a specific legal mandate itself, Portable Appliance Testing (PAT) is the universally recognised best practice to meet this obligation and is essential for compliance and insurance purposes.
Absolutely. We have proven experience in designing and installing complex electrical systems for a wide range of industries, including those that require three-phase power, specialised machinery wiring, data centres, or sophisticated lighting and audio-visual setups.
Upgrading your business to LED lighting offers two primary benefits: significant cost savings on your energy bills and lower maintenance expenses due to their much longer lifespan. LED lighting also provides a high standard of light, which can enhance retail displays, improve workplace productivity, and boost safety and security.
Your business likely needs a three-phase power supply if you operate heavy machinery, large motors, commercial-grade kitchen equipment, or powerful air conditioning units. It delivers a more stable and robust current than a standard supply, which is critical for running high-demand equipment safely and efficiently.
Yes, every member of our team is a fully licensed, qualified, and insured electrician. We are accredited by all relevant industry bodies, and our work is performed in strict adherence to national safety standards, ensuring your business, property, and staff are fully protected.
Yes, we provide end-to-end electrical fit-out services. Our process includes initial consultation and design, complete installation of power, lighting, and data systems, and final testing and certification, ensuring your new business space is safe, compliant, and ready for operation.
Costs are based on the scope and complexity of the work required. For smaller jobs like repairs or testing, we often have standard rates. For larger projects like a full rewiring or a new fit-out, we provide a detailed, itemised quote after a thorough assessment. We are committed to transparent pricing, so you will understand all costs before work commences.
Get in touch

Our team is here to help
Contact our friendly, knowledgeable team with your queries and to discuss cost-effective pricing solutions.