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Endorsed by Which?
National Security Systems Group
Opening Hours
Today -
- Monday 09:00–17:00
- Tuesday 09:00–17:00
- Wednesday 09:00–17:00
- Thursday 09:00–17:00
- Friday 09:00–17:00
- Saturday - Closed
- Sunday - Closed
About
At National Security Systems, we are proud of our reputation as dependable and progressive security specialists.
Since forming in 1995, we have quickly established ourselves as one of London’s leading security systems providers thanks to our ability to deliver first-class security solutions and a friendly, personalised service. We can provide you with every type of commercial and domestic security system and products you may need; including Burglar Alarms, CCTV, Access Control and Door Entry Systems.
While our technical expertise and knowledge of security principles means we can offer state-of-the-art, reliable solutions; It is our dedication to customer care that sets us apart from the rest. We appreciate you need to get the best value for your investment and need a security system that is effective and reliable, and can be installed and operated with minimum disruption.
What we do
Alarm and security equipment installers
- Alarm installation
- CCTV installation
- Access control
- Door entry systems
Security equipment suppliers and manufacturers
- CCTV & video equipment
- Burglar alarm systems
- Intercom systems
My work
Customer reviews
Why you can trust these reviews
All reviews are verified as being genuine and a true customer of this trader.
How can we be so sure?
100% of the reviews we publish have been through our stringent moderation process.
4.9
35 reviews
Recommended
Recommended
by 97% of customers
Sort by
Great service and installation
Customer Service
Quality
Value
A great company with helpful staff and a pleasure to deal with. NSS provided my wife and I with great service and were very professional throughout the process. Nice and tidy installation by an experienced fitter and very prompt with their timings. I would definitely recommend them to family and friends in the future.
Customer in Greater London
, work completed
Recommended
Highly Professional throughout.
Customer Service
Quality
Value
I would like to thank Ash and all at NSS for doing an excellent job. From my initial call to NSS Ash was very helpful and professional. NSS were able to install my alarm within 2 days of my initial enquiry a week before Christmas. That was very impressive. I would highly recommend NSS to anyone who is thinking of installing a high quality alarm system . Thank you NSS. Hardeep .
Customer in Greater London
, work completed
Recommended
Absolutely fantastic look no further
Customer Service
Quality
Value
Really cannot praise they guys enough they went above and beyond on the job to exceed my needs and expectations. Workmanship is top quality and equipment is fantastic quality. Thanks guys
Customer in Greater London
, work completed
Recommended
Professional and impressive
Customer Service
Quality
Value
Fitted a new alarm system in our new office block Great professional job highly recommended - all well installed and explained
Michael G
, work completed
Recommended
Cctv instalation
Customer Service
Quality
Value
NSS did a great job for us. They went through all the details and listened to everything we wanted. Both the workman were polite and worked with care and precision. The cables and cameras are all so well fitted that you cannot even see the cables. They provided a training session and helped with the setting up of the apps on our phones. A really truly outstanding service. Nothing was too much trouble from the start to the end and the entire team are very professional. I would have no hesitation in recommending NSS.
Which? Trusted Traders Consumer
, work completed
Recommended
Excellent Top class service
Customer Service
Quality
Value
Used NSS recently for some works. Everything from initial visit, estimate, execution and after-sales was excellent.
AshokB
, work completed
Recommended
Efficient, professional team
Customer Service
Quality
Value
All members of the team I met with were efficient, professional and courteous for alarm fitting. They were all knowledgeable and open to any trouble-shooting questions. Evidently with their own support team behind the scenes, it was good to know all queries covered. Good turnaround. Above all - Good teamwork from start to finish. All in all a good job, very well done.
Anonymous
, work completed
Recommended
Professional, Informative & Courteous
Customer Service
Quality
Value
Thoroughly impressed with the work carried out by technicians Jay & Mayan. Both chaps were professional, informative and courteous whilst carrying out work at our property. I have absolutely no hesitation in recommending NSS (namely the world-class customer service provided by Jay & Mayan) to my friends, family and clients. Thank you once again.
RatherNotDisclose
, work completed
Recommended
Alarm Fitting
Customer Service
Quality
Value
The company provided an excellent quick service with exactly what we needed. Work was completed efficiently and training provided was clear. Thanks very much
Paulie
, work completed
Recommended
Great service & very professional
Customer Service
Quality
Value
Without any hesitation I would recommend this firm, I would add that I can be quite a difficult customer and changing my mind several times before the installation (and even during) but nothing was too much trouble. The work was carried out professionally. We were kept fully up to date up to and during our installation, I needed to add another phone to my alarm system so called the support team and five minutes later it was all done. Truly fantastic. Thank you, NSS team.
Sandhu
, work completed
Recommended