Scores within last 12 months

Reliability & timekeeping
Invoice History
Charged as per quote / estimate100%
Appointments reported as missed (6 months) 0
Average score 9.91

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At ON Electrical & Fire Alarm Services we pride ourselves on meeting customer expectations no matter how large or simple the job. Our electricians carry out a safe, reliable service with certified expert knowledge on all domestic, commercial and industrial installations. We specialize in commercial fire alarm installation & maintenance.

Our Services..

Domestic & Residential Services
Before we carry out any project we carefully plan each step so that our customers understand exactly what they’re going to receive. Our Domestic & Residential Services include:

  • Certification
  • Emergency call-out
  • Smoke Alarm installation/testing
  • Consumer Unit Upgrades & Installations
  • Garden Light Design
  • Lighting Design
  • Maintenance

Contact us today for a free quote or for more information.

Commercial & Industrial Services
Finding the right people for the job is no easy task. Whether you are undergoing a refurbishment or having issues with your fire alarm, ON Electrical & Fire Alarm Services are here to help. With on-site visits, you can ensure your project will go according to plan and designed just how you want it. We provide a maintenance contracting service, saving you the time and trouble of checking for damaged or faulty equipment. Our Commercial & Industrial Services include:

  • Emergency call-out
  • Contract Service Maintenance
  • Fire Alarm Inspection & Testing
  • Fire Alarm Certification
  • Periodic Inspections (EICR)
  • Lighting Design

Contact us today for a free of charge quote or for more information.

Fire Alarm Services
Fire alarms are an essential for domestic, commercial and industrial buildings. They save thousands of lives a year so it’s absolutely crucial that they are installed and repaired properly.
With extensive industry experience, our team will advise you on the most suitable solution whether you’re upgrading an existing system or installing a brand new one. Our service also extends to the regular servicing and testing of your new alarms as well as any existing alarm systems; a legal requirement every six months in line with BS5839. Such regular maintenance ensure your alarms are in full working order at all times and are ready for use day or night should a fire occur. Our Fire Alarm Services include:

  • Addressable Systems
  • Twin-wire Systems
  • Conventional Systems
  • Domestic Smoke Alarms
  • Fault Finding
  • Battery Replacement
  • Disabled Toilet Alarm
  • Fire Alarm Maintenance
  • Fire Door Retainers
  • Fire Emergency Shut Off
  • Interface/Relay Connection
  • Inspection, Testing & Certification
  • Log Books
  • Temporary Building Site Fire Alarm Systems
  • Smoke-Vent Control Systems
  • Wireless Fire Alarm Systems

Contact us today for a free quote or for more information.

ON Electrical & Fire Alarm Services offer full preventative and reactive maintenance services, ensuring your planned maintenance and inspections are conducted on time and efficiently.
Our services include periodic inspections, emergency lighting inspection and emergency call outs. We are always happy to discuss your individual requirements over the phone or by email and are able to work around your individual needs.
It doesn’t matter what kind of industry you’re in, as we provide commercial, residential and industrial services.

Based in


Works in

London City, North London and East London... South London up to Zone 3., West London