From a blown fuse at 3am to a full commercial rewire, storage heater servicing for landlords, EV chargers, CCTV and fire alarms — our NICEIC engineers arrive promptly, explain every step, and charge only for what was agreed.
Based in Paddington and trading as London Electricians, Prisma Energy Ltd has spent years earning the trust of homeowners, landlords, letting agents and businesses across the capital — one job at a time.
Our NICEIC-regulated engineers — Daniel, Marian, Ioan, Ruben, Emanuel and Alan — are named individually in our Google reviews because clients remember them. We charge exactly what was agreed. We explain every job before starting. And we never carry out work without your consent.
Storage heaters are notoriously hard to find a competent electrician for. The technology is older, the wiring quirks are specific, and most general electricians don't carry the experience to repair, replace or rewire them safely.
We do. Our team services and replaces storage heaters and immersion heaters across the capital — for private homeowners, landlords with rental portfolios, letting agents and managing agents. Reliable, reasonably priced, and clean (yes, we hoover up afterwards).
From 24/7 emergencies to scheduled compliance work, we cover the full spectrum of domestic and commercial electrical services across London.
24/7, 365 days. From £75+VAT/hour. Engineer on site fast — across all of London.
Emergency Call-Out →Servicing, supply and installation of fire alarms, smoke detectors and emergency lighting systems.
Fire Alarm Service →Repair, replacement and servicing — London's go-to specialists when no one else will touch them.
Heater Specialism →EICRs for private landlords, letting agents and managing agents. Periodic inspections and PAT testing.
EICR Inspection →Door entry systems, intercoms and access control for residential blocks and commercial premises.
Access Systems →Burglar alarm installation, CCTV systems and outdoor security lighting — domestic and commercial.
CCTV & Alarms →Domestic air conditioning fault diagnosis, repair and servicing across London homes and offices.
AC Repair →Driveway and sliding gate automation repairs, motor replacements and intercom integration.
Gate Repairs →Fill in the form below or call us directly on 020 8728 9179 for 24/7 emergencies. Your message goes to info@london-electricians.com.
Or message us on WhatsApp — 020 8728 9179
Power cuts, dangerous wiring, sparking sockets or a tripping consumer unit at 3am — our emergency engineers are available across all of London, every day of the year.
From the moment you call, we explain our hourly rates clearly, give an honest assessment when we arrive, and never start work without your consent. No call-out gimmicks. No hidden charges.
Call Now: 020 8728 9179The service most other electricians won't touch. We repair, replace and remove storage heaters and hot water immersion heaters across London — for homeowners, landlords with rental portfolios and letting agents managing flats with night-storage systems.
Reliable, fairly priced, and tidy — we even hoover up after we're done (as one reviewer put it).
Book a Heater SpecialistFire alarm system servicing, supply and installation across commercial premises, HMOs and multi-occupancy residential blocks. Smoke alarms, heat detectors and emergency lighting — all installed to current British Standards.
Our dedicated Fire Alarm division holds its own 5.0/5 Google rating.
Fire Alarm Service →Electrical Installation Condition Reports for private landlords and letting agents. Periodic inspections, PAT testing and full compliance documentation — turned around quickly, with clear recommendations rather than upsells.
We work with managing agents across London on bulk EICR programmes for rental portfolios.
Book EICR InspectionDoor entry systems, video intercoms and full access control installations for residential blocks, offices, schools, gated developments and HMOs across London. Repair of existing systems and full new builds.
Access Systems →Burglar alarm installation, IP CCTV systems with remote viewing and recording, and outdoor security lighting. We design, install and service security systems for London homes and commercial premises — and integrate with existing access systems where required.
Security Systems →Split systems, multi-splits and through-the-wall units — we diagnose faults, repair, service and maintain domestic AC units across London. Clear quotes before work begins, no surprise add-ons.
AC Repair →Swing, sliding and cantilever gate automation — motor replacements, control panel faults, photocell sensors, key fob reprogramming and intercom integration. We repair existing automated gate systems across London.
Gate Repairs →Based in Paddington with engineers covering every London postcode — Central, North, South, East and West.
Our customers thank our engineers by name in their reviews. That's how you know we don't hide behind a brand — we send the same trusted, NICEIC-trained people every time.
Anything electrical, domestic or commercial. If it isn't listed below, ask us — we almost certainly do it.