We provide full electrical solutions for commercial buildings, combining installation, maintenance, and energy-efficient systems safely.
We install, maintain, and upgrade HV switchgear to ensure reliable control and safe industrial electrical distribution.
We deliver high-voltage transformer services, including installation, maintenance, testing, and fault diagnostics, to ensure reliable performance.
We design, test, and commission protection relays, ensuring precise fault detection and stable high-voltage networks.
Established in 1963 and operating under its current management since 1981, our family-run company is based in Caterham. With over 80 years of combined experience, we specialise in installing, testing, and maintaining HV switchgear, HV transformers, and HV protection relays that keep major London landmarks and data centres running safely and efficiently.
As a long-established specialist firm, we provide expert engineering solutions for critical electrical infrastructure. For more information about substation installation, transformer diagnostics, or our other services, visit our FAQs page or contact us to discuss your requirements.
Completed projects
Professionals
Years on the market
We are a registered SafeContractor member, showing our dedication to maintaining the highest health and safety standards through rigorous independent auditing of all our practices.
Our contractors are NICEIC-certified, ensuring that all electrical work meets current BS 7671 standards and providing clients with guaranteed technical compliance and quality assurance.
As an Avetta-approved contractor under Schneider Electric, we are fully qualified to safely install and maintain high-end switchgear, meeting all manufacturer specifications.
Unlike large corporations, our directors are hands-on, personally overseeing every project. Clients have a direct line to decision-makers who are invested in ensuring your project is completed successfully, providing accountability and peace of mind from start to finish.
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Our high-voltage electrical services are designed to keep commercial and industrial systems running smoothly. As specialists in HV switchgear, HV transformers, and HV protection relays, we cover everything from installation and maintenance to testing and upgrades, ensuring electricity is distributed safely and systems operate without interruption. From substations to data centres, our expertise supports continuous operation and protects both people and equipment.
Beyond high-voltage services, we deliver comprehensive electrical solutions. This includes fault diagnostics, emergency repairs, planned preventive maintenance, thermal imaging, and partial-discharge surveys to identify potential issues before they cause downtime. We also provide modern energy solutions, including renewable energy integration, smart lighting, and building controls, as well as structured cabling and power distribution. Every service is delivered to the highest safety and compliance standards, ensuring reliable electrical infrastructure that meets both operational demands and regulatory requirements.
Our senior engineers hold Senior Authorised Person (SAP) status, legally and technically qualifying them to operate and isolate high-voltage networks up to 33kV. They manage network safety, issue critical permits, and control HV systems, ensuring that all work, from HV switchgear operations to relay scheme testing, is performed to the highest safety standards and in compliance with industry regulations.
Our team also holds industry-standard technical qualifications, including City & Guilds electrical power training, HNCs or degrees in electrical engineering, and specialist expertise in HV protection relays. Continuous manufacturer-approved training, health and safety certifications, and skills in thermal imaging and partial-discharge surveys ensure our engineers remain at the forefront of safe, compliant high-voltage electrical work in London and across the UK.
