NSI have reached over 800+ 5-star reviews on Google!

NSI are beyond proud to have received over 800+ 5-star reviews on Google! We pride ourselves on delivering a high-quality and professional service and we’re delighted to hear that our customers are having an outstanding experience. We appreciate every single review; it is heart-warming to know how many people we help! 

Here are some of our favourite 5-star reviews from our customers:  

“Bang on time. Polite. Respectful of Covid safety. Gave explanation of events. Very thorough and careful checking equipment fixtures and fittings. Explained fully the results and the follow up process. A total professional tradesman.” – Iain Mckenzie 

“The lads arrived just after 9am, extremely pleasant, friendly and professional. Explained everything they were doing. Complete confidence in their knowledge. Ideal work force. Exemplary employees for any company” – Michelle Sam Adams 

“We had an electrical check on our rented property today. He was excellent – checked everything and let us know anything that needed to be followed up. Explained everything transparently for us. Even entertained conversation with our little one who’s talking to everyone she can during these covid times! Would highly recommend – professional, friendly, thorough.” – Chloe Williams 

Not only do we have over 800+ 5-star reviews, but we have also been recognised and shortlisted for the third year in a row by the ESTAS for our outstanding customer service to our clients. The ESTAS honours the best agents, conveyancers, brokers and suppliers in the UK. 

We are specialists in EICR’s, PAT Testing, Smoke Detector Testingand VIR’s for landlords and estate agents across the UK. Learn more about our services and where we cover down below! 

What Services Do We Offer?  


PAT Testing 

Portable Appliance Testing (PAT) is the term used to describe the examination of electrical appliances and equipment to ensure they are safe to use.  

Under The Landlord and Tenant Act 1985 and The Electrical Equipment (Safety) Regulations 2016, Landlords must ensure appliances provided are ‘safe’. The best way to check they are safe is by doing a PAT test. 

To read more about PAT testing, click here. 


An electrical installation condition report (EICR) is carried out to ensure the property is electrically safe for tenants. This type of report is carried out to help to identify any damage or faults in electrical installations.  

From April 2021, every rental property in England must have a valid electrical condition report as per “The Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020”. 

To learn more about EICR certificates, click here. 

Smoke Detector Testing 

Did you know that it is a legal requirement to have a fully operational fire detection system installed in your property?  

As a landlord, the smoke alarms in your rental accommodation must be correctly installed by someone electrically trained and fitted in all the correct locations.  

To find out more about smoke detector testing, click here. 


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. 

A VIR is an annual inspection that is required 12 months after an Electrical Installation Condition Report. 

At NSI, we will assess the condition of all fixed electrics within your property. To read more about VIR’s, click here. 

Where do we service?  

NSI are an award-winning nationwide company that offers national coverage over an extensive number of locations working alongside a vast array of letting and estate agents.   

We currently service (but are not limited to): Leeds, Manchester, Liverpool, Newcastle, Nottingham, Oxford, Leicester, Sheffield, Crawley, Croydon, & Swindon.  

Have you tried our award-winning service? Book here for all your electrical safety needs.