Highly satisfied with the service received. Always professional, courteous, friendly and efficient. Today did not disappoint, Darren , who has been the service technician for my alarm for about 10 years, as always was able to do an excellent job, offer advice and maintain the equipment.

Our mission is to ensure our customers have peace of mind through the strength of our modern home and business security services



We put their protection at the forefront of everything we do
At Colt Security Systems, our skilled technicians work with the latest technology to deliver a carefully designed approach, be that in a home or commercial setting, that provides a long-lasting solution to your security needs. We know that criminality is becoming ever more innovative, and we see it as our duty to counter those threats with industry-leading protection and the clever know-how of our experienced engineers.
Importantly, not only are we a family run business with over 45 years of experience, but we are also approved and accredited by the National Security Inspectorate (NSI) with a Gold Standard award. Therefore, you can have total peace of mind when selecting Colt Security Systems as your home or business security specialists.



Verified Reviews

We never forget or lose focus that it is you, our customer, that is central to our success.
This is why we make sure that you're included in every step of the process and look at your security from your perspective, taking time to understand your specific and individual needs.
We are based in Essex but operate all over the UK, including central London, offering that same great service. So, whether you are a business owner in London, a school in Surrey, or a private dwelling in Essex - we have you covered.
Why Choose a Gold NSI Accredited Security Firm?
Our strong NSI approval gives you confidence in the integrity of our security systems, its maintenance and our 24/7 monitoring process.
The National Security Inspectorate (NSI) is recognised as the leading professional body for the security and fire protection industries in the UK. They’re there to ensure compliance with legislation and regulations to security companies of all sizes. Every installation by an accredited company comes with an NSI Certificate of Compliance. This can be shown to all insurance companies as crucial evidence that it has been installed to all the necessary standards and may even allow for discounting on premiums.
Not only this, but all our staff are vetted, so you know that whoever comes to your property has been security screened to British Standard 7858.
Your journey to taking full control of your home or commercial security starts today with a free, no obligation property survey
For us to tailor our approach to your home or business security, we are offer a free consultation on your premises at a time convenient to you. Our team, who carry years of experience in security, will spent time observing and investigating the opportunities to add resilience to your property. With an extensive knowledge of the hardware at their disposal, combined with an understanding of how criminality operates, our friendly team, can plan a targeted approach to both monitoring and deterring. In this way, our aim is to provide you with:
- Options on hardware with priority recommendations to satisfy your budget
- Latest software to prevent false activations, even those of roaming pets
- Project management, involving clear and concise updates to keep you informed every step of the way
- Certificated graded system (No DIY kits, off the shelf products)
- Guaranteed peace of mind

Home Security
Formidable security cover to safeguard any home.

Business Security
Commercial options to protect your livelihood.

Our services
Our range of exceptional security services in detail.


Powerful Integrated Solutions for the Digital Age
With our alarm Smart Phone technology and our app, the power and control of surveillance and detection options are firmly in the hands of the customer.
We offer the ability for you to remotely arm, partially arm or deactivate any system at the touch of a button.
Our CCTV Smart Phone technology means your CCTV control room is in always your pocket, making home and business security both effortless and convenient.
A Track Record for Empowering Customers
With a 5 star google review score and a 9.9 Checkatrade average score from over 541 reviews, you can be sure a call to Colt Security Systems is the first step in a quality product being delivered to you.
Our previous customers are the proof that Colt Security Systems always work to exceed the customer’s expectations and we take pride in our customer’s satisfaction. As a family run business, our aim is to deliver a 1st class service with peace of mind.
Our Latest Articles
Here, you will find a collection of informative and insightful articles on all things security, from the latest advancements in CCTV technology to expert tips on how to protect your home or business from intruders.
Colt in the Community – Billericay Food Bank
Colt Security Systems - Leading Accredited Security Solutions covering London and the South East. Local Businesses Supporting Community Services and Volunteering InitiativesChoosing the Best Alarm System
Colt Security Systems - Leading Accredited Security Solutions covering London and the South East. Choosing the Right Alarm System and what you can ExpectInstallation Case Study: PDQ IT support Ltd
Security Blog - PDQ IT Support Ltd installation and testimonial