We pride ourselves on providing our customers with excellent standards of electrical testing and inspections.


An award winning specialist electrical safety company. We operate nationally working alongside a vast array of letting and estate agents.

Our aim is to offer a streamlined simple route to electrical compliance. Our extensive knowledge and team of skilled electricians ensure a smooth efficient process from first contact with our amazing office staff to completion of the job.

“A Personal Approach With A Professional Service”

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At NSI we prioritise electrical safety testing, unlike other electrical firms, whose primary focus is large installation works.

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We don't subcontract any work, and everything is completed in-house. All required remedial works will be evidenced with a photo to ensure complete transparency.

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All engineers are directly employed by NSI, and will always be dressed in branded uniform with company ID badges. Due to the network of engineers we have available, sickness and absence issues can normally be covered by another engineer vastly reducing cancellations or rebooks.

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You will receive a digital certificate within 48 hours of job completion with a quotation for any remedial works that may be required.

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Never lose a certificate again. You will be supplied with unique log-in details to access all certificates in your dedicated client portal.

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Our highly trained office staff are always at hand to aid you with any questions or queries. We have a bespoke CRM system that ensures all company processes run smoothly and efficiently.

Award winning suppliers to the Property Industry

The Estas Supplier of the year 2019 Award
The Estas Supplier of the year 2020 Award

We are delighted to be announced WINNERS for the 2nd year running of the 2020 ‘best in sector’ for electrical services to estate agents and letting agents throughout the UK.

Electrical Safety Report Company Overview

Electrical Services:

Electrical Testing

Fixed Wire Testing (EICR)

As many of you are now aware, the government have brought in “The Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020”.

Portable Appliance Testing

Portable Appliance Testing

Safety in the workplace must be a top priority for all businesses to ensure ​electrical appliances and equipment are safe to use.

Visual Inspection Report

Visual Inspection Report

A Visual Inspection Report (VIR) is an in-depth visual inspection of the fuse board and all accessories, such as sockets and switches, to identify any visible signs of defects, damage, or deterioration.

Smoke Detectors

Smoke Detector Testing

Smoke detectors are life-saving pieces of equipment. It is a legal requirement to have a fully operational fire detection system installed in your property.

Our clients include:

If you have any questions or concerns regarding electrical safety, please contact us and we will endeavour to contact you as soon as possible.