CTS Electrical Services working at Victoria Square Belfast
NICEIC Approved & AccessNI Vetted

Northern Ireland's Trusted Commercial Electrical Contractors

Electrical installations, testing, compliance and responsive maintenance for businesses, schools and public sector organisations across Northern Ireland.

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1M+ Tests Annually
24/7 Support
AccessNI Vetted
Northern Ireland Coverage
CTS Electrical Services team supporting organisations across Northern Ireland
Featured Project Victoria Square Belfast Commercial lighting upgrades delivered around a busy retail environment
About CTS

Trusted Commercial Electrical Experts

Based in Lisburn, CTS Electrical Services supports businesses, schools, public bodies and facilities teams throughout Northern Ireland.

Our qualified engineers deliver commercial electrical installations, testing, compliance and responsive maintenance with careful planning, clear reporting and minimal disruption.

10+ Years of Commercial Experience
1,000,000+ PAT Tests Annually
40+ Engineers Across Northern Ireland
24/7 Emergency Support
NICEIC Approved Contractor and SparkSafe accreditations
AccessNI Vetted Engineers
About CTS View Our Work
Core Services

Electrical Testing & Compliance Services

Protecting businesses, schools and landlords across Northern Ireland.

Commercial PAT Testing in Belfast
Compliance

Portable Appliance Testing

Protect your staff, fulfil your legal Duty of Care and satisfy insurance requirements with our certified portable appliance testing at scale.

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Commercial Fixed Wire Testing EICR
Compliance

Fixed Wire Testing (EICR)

Thorough EICR inspections identify electrical defects, fire risks and remedial priorities in line with BS 7671.

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Emergency Call-Out Maintenance
24/7 Support

Reactive Maintenance

Rapid 24/7 emergency response and expert fault finding to safely resolve outages and minimise your commercial downtime.

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Emergency Lighting Testing
Maintenance

Emergency Lighting

Complete one hour and three hour discharge testing with clear records for vital escape lighting systems.

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Fire Alarm Testing
Safety

Fire Alarm Testing

Fire alarm testing, zone inspections and clear reporting completed in line with the relevant BS 5839 requirements.

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Fire Extinguisher Servicing
Safety

Extinguisher Servicing

Professional fire extinguisher servicing, routine maintenance and records to support your commercial fire safety duties.

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Fixed Appliance Testing
Compliance

Fixed Appliance Testing

Test hard wired appliances such as hand dryers, water heaters and commercial kitchen equipment to close the gap between PAT and EICR.

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Commercial Electrical Installations
Projects

Electrical Installations

Commercial installations, refurbishments and fit outs delivered to BS 7671 with testing and certification included.

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Commercial LED Lighting Upgrades
Efficiency

LED Lighting Upgrades

Reduce energy use and maintenance demand with an LED lighting design tailored to your site, smart controls and professional installation.

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Electrical Thermal Imaging Survey
Prevention

Electrical Thermal Imaging

Identify abnormal heat in live electrical equipment before hidden faults become downtime, damage or fire risk.

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CTS engineer working on structured data and electrical cabling
Connectivity

Data Cabling & Networks

Design, installation and certification for fibre, Cat6 and structured networks that keep commercial sites connected.

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Talk to CTS

Not Sure Which Service You Need?

Tell us about your premises and we will help you identify the right inspection, installation or maintenance service.

Contact Our Team
Rapid Response Across Northern Ireland

Need Urgent Commercial Electrical Support

Call 028 9013 3160 Request Support
Latest Insights

Compliance News & Updates

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Aug 18, 2026

How Much Could Your Business Save With an LED Lighting Upgrade?

Discover how better fittings, smarter controls and a site specific LED upgrade can reduce commercial lighting costs.
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Hand holding a thermal imaging camera inspecting an electrical panel.
Aug 18, 2026

Commercial Thermal Imaging: Find Hidden Electrical Faults Before Winter

Use commercial thermal imaging to identify abnormal heat in live electrical equipment before it becomes disruption or downtime.
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Aug 18, 2026

Is Your Workplace Electrically Ready for Autumn 2026?

Reset electrical safety records, close outstanding actions and prepare your Northern Ireland workplace for autumn.
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Row of red brick terraced houses with many chimneys.
Jul 5, 2026

The 2026 Electrical Safety Rules for NI Landlords: Are You Legally Covered?

Statutory Grace Periods Have Officially Expired If you own a private rental property portfolio in Northern Ireland, the regulatory compliance...
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Reviews

Client Testimonials

"We have always been completely satisfied with their performance. They do an excellent job on site, are always punctual, highly efficient and offer the most competitive rates for the service they provide across multiple large contracts."

Graham Construction

Verified

"CTS Electrical Services have been an integral part of our trusted supply chain for several years. They deliver value rather than just meeting the minimum standards, highlighting issues before they develop. I have no hesitation in recommending them."

CHC Group Ltd

Verified

"One of the most consistent, dependable members of our diverse subcontracting team. Their focus on quality, safety and communication sets the standard high. Their unique approach to preventative maintenance across multiple disciplines is unrivalled in the sector."

LM Services (NI)

Verified
Frequently Asked Questions

Commercial Electrical Services FAQs

CTS provides commercial electrical installations, PAT testing, fixed wire testing, emergency lighting, reactive maintenance, LED lighting upgrades, thermal imaging and data cabling for organisations across Northern Ireland.
Yes. CTS is based in Lisburn and supports commercial clients throughout Belfast and every county in Northern Ireland, including single premises and estates with multiple sites.
Yes. Where the project allows, CTS can plan testing, installation and maintenance around shutdown periods, evenings and weekends to reduce disruption to your organisation.
The documentation depends on the service. CTS provides the relevant electrical reports, asset records and certificates for completed testing or installation work, with any remedial priorities explained clearly.
We start by understanding the premises, required service, operating hours and timescale. Where needed, we arrange a site survey before providing a clear scope and quotation so you know what is included before work begins.
Yes. CTS supports estates with multiple sites through coordinated scheduling, consistent testing procedures and clear digital reporting. This gives facilities teams one dependable point of contact across their Northern Ireland locations.
Choosing a NICEIC Approved Contractor gives your organisation added confidence that electrical work is assessed against recognised technical and safety standards. CTS combines this approval with AccessNI vetted teams and practical commercial experience.
Get in Touch

Lisburn Headquarters

Contact our compliance specialists directly for technical support or request a site visit from one of our AccessNI vetted engineers.

Direct Dial

028 9013 3160

Enquiries

service@cts-ni.co.uk
Antrim • Armagh • Ballyclare • Ballymena • Ballymoney • Banbridge • Bangor • Belfast • Carrickfergus • Coleraine • Comber • Cookstown • Craigavon • Derry (Londonderry) • Downpatrick • Dungannon • Enniskillen • Holywood • Larne • Limavady • Lisburn • Lurgan • Newry • Newtownabbey • Newtownards • Omagh • Portadown • Strabane • 
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