Securing your property, people and assets with a reliable and proven deterrent

We are a proven service provider who has installed thousands of alarm systems for businesses and homeowners across London over the last 40 years.


Reduce your chances of a break-in with an SDS intruder alarm

Our alarms are a strong, visual deterrent that drive crime away from your building

An alarm system helps to form the backbone of a reliable security system. They are proven deterrents to crime and also provide you with reassurance that your property is safe from the threat of intrusion.

As NSI Gold-approved alarm engineers, we have been exceeding the highest standards in the design and installation of alarms for more than 4 decades. We are committed to using the latest technology and we are not limited to one specific manufacturer which means we can provide a completely unbiased service.

For a FREE quote, please get in touch with our London team today.

Alarm Engineers London

Installations, monitoring & servicing

Fully accredited & insurance approved

Meeting EN 50131 standards


Solutions and services for all types of applications

Whether you’re looking for a new alarm system, or looking to have your current system serviced, we can help. Our alarm engineers are the best in the industry and they share our same passion for quality and progress.

Alarm Maintenance

We offer an affordable alarm maintenance and servicing programme that is trusted by thousands of homeowners and businesses.

Alarm Replacement

Is your current system beyond repair or you’re unhappy with your current security provider? We can replace your alarm.

Temporary Alarms

For temporary security such as on a building site or vacant property, we can provide you with a reliable alarm system that ensures the property is safe.

Commercial Alarms
Alarm Servicing
Alarm Maintenance
Smart Alarms
Alarm Engineers London


Ensure your alarm is never ignored with 24-hour monitoring

Ignoring your alarm could result in a great loss of assets and belonging. With someone monitoring it 24/7, it guarantees a response and ensure it never goes ignored.

If your system is triggered, our highly trained operatives will contact either you or your designed keyholder to let you know the system has been triggered. For additional security, you can even have monitoring with the police who will attend to your property if the system has been triggered. If you would like to know more about this, please get in touch with our London team today.


The quickest and easiest way to control your alarm

Smart security systems have revolutionised the way in which you control and manage the security of your building.

Our smart alarms can be controlled via an app which allows you to arm and disarm your system from anywhere. Not only that, you can set up alerts to let you know if someone else has set the alarm during your absence.

Smart Alarms London


Our team are ready to take your call

Looking for an established and trusted team of alarm engineers? Our experts are ready to take your call and answer any questions that you may have about our services.

Arrange a site survey today with SDS Security.