Welcome to National Security Systems Group

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.

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 that 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. That’s why, no matter what type of alarm system or security system you need, we will always do everything we can to:

Ensure your security system provides the level of security your London property requires. We will listen to your concerns, conduct a thorough and FREE security survey of your property and design a security system that meets your specific needs and budget.

Help you choose the security systems and products alarm systems that provide the level of security you need and offer the best value. We will use our expertise to make sure you make the best investment for your requirements – the most suitable security solution is not always the most expensive.

We can provide you with every type of security system and product you may need, including burglar alarms, CCTV, and access control and door entry systems. All of our systems are connected to our central monitoring station, which is manned 24 hours a day, 365 days a year.

Make sure your security system is installed as soon as you need it. We can even respond to London clients in emergencies – in some cases, we have been able to install an alarm system within hours.


Commercial Security Systems

We went above and beyond to create a fantastic experience…

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Residential Security Systems

We went above and beyond to create a fantastic experience…

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  • Excellent service fulfilled to a high standard and level of care. Will not hesitate to use and recommend to others. 10/10 Thanks again!

    Arian Abassi
  • Great support team, my main contact was Ashish Khetani, every time I called he was able to resolve any of the issues I had. Even ensure that the CCTV to mobile app worked for us properly.

    Callistus Asirvatham
  • Used NSS on many projects. Very competitive prices, excellent standard of work, professional staff and in depth knowledge within the company.

    Hemel Hirani
  • Hello, I’m a new business owner and having a trusted alarm system fitted has always been something I needed to have. From the start to the end of the NSS’s service, I’ve been so pleased with everything the guys here have done. There were a few hiccups along the way but the team seems to have it all figured out. When there was a question or concern, they always have the answer, if not, a very quick response coming back to me. I’d like to personally thank Dave for staying on the phone to me for a whole hour (when he didn’t have to) explaining exactly the products, process, history of the company. I would also like to thank Jay and his team for fitting the alarm to our shop, in addition, another team was sent out to us the following few days to check on our system as a minor problem occurred. You have all made my job a lot more easier and especially feeling safe once I leave my office knowing that we are in good hands. Moreover, the fact that this is a family company which has been around for over a decade, truly inspires me as I love supporting family businesses, not only this but NSS say what the means. Thank you for being a professional & superb company… It’s a dream to have found NSS. Keep up the good work guys!

    Lisa Truong
  • We have been their customers for 9 years! Recommended others to them too family and friends. We have never thought twice to look elsewhere for home and business security.

    Mohsina Loonat
  • Exceptionally great service, alarm and CCTV fitted by NSS, speedy, efficient and professional engineers. Aftercare is of 5 star standard, any issues I’ve had have been rectified straight away, definitely recommend this company.

    Cilla Vekria
  • If you’re looking for peace of mind, reassurance & excellent customer service from NSS engineers to customer support these guys guarantee you 200% of their commitment to your safety, we have been with them for over 18 years and have never been given a chance to complain. We would never go elsewhere as this company looks after each of their customer as if their own! 5 stars just isn’t enough! Keep up the good work NSS. You’re in a league of your own!

    Meera Meghani
  • I couldn’t rate NSS high enough. Excellent service at every stage. I travel quite a lot with my job so am pleased to have the ability to keep an eye on my property when not there. Well done guys!

    Fergal O’Malley
  • Great Customer service! Really setting the benchmark for the security industry! Keep up the good work guys!

    Alpesh Popat
  • First class service from Dave and his excellent team at NSS. A pleasure to deal with. Highly recommend.

    Joshua Finn
  • NSS provided the security for our factories/offices and homes. From the outset the professionalism that was displayed by the NSS team was of a very high standard. All our security concerns were taken care of efficiently. All the team were very polite and communicated at each stage of the job, and the fitters would always go the extra mile on the day of installation and they would only call the job complete once they knew we were completely satisfied. Well done to Dave, Vin and all the team at NSS, highly recommended!!

    Harry Bhudia
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