SEG is a NICEIC- and ECA-approved electrical contractor based at SEG House in Chiswell Green, St Albans. Serving homeowners, landlords, housing providers and businesses across Hertfordshire, Bedfordshire, Buckinghamshire and London, the company has operated in the area since 1995. Its employed engineers and apprentices carry out domestic and commercial electrical work, with jobs tested, photographed and certified for clear, traceable records.

Services include EICR testing and landlord certificates, electrical fault-finding, full and partial rewires, consumer unit replacements, lighting, new circuits and emergency call-outs. SEG also installs emergency lighting, fire alarm systems, smoke and carbon monoxide alarms, door entry, access control, warden call systems, CCTV, data cabling and Wi-Fi. Renewable energy services include MCS-certified solar PV and battery storage, alongside EV charger installation.

For housing providers, SEG delivers planned electrical programmes, remedial works and live reporting. Commercial customers can arrange fixed-wire testing, mains upgrades, containment, maintenance and phased or out-of-hours installations. The company also provides written quotes, fixed appointment times and a one-year workmanship guarantee for domestic work.