Our maintenance department is one of the best in the industry thanks to the very experienced team we have running it and our long-standing NSI Gold certification is evidence of that.
Many people believe that security system maintenance is just another business overhead they can ill afford – but what is the potential cost of an intrusion or fire within your business? When installing a system for the sole purpose of protecting your livelihood and staff, it makes sense to ensure it is operational 24/7.
In the rare event of a problem developing with your system we aim to be on your premises within 4 hours whatever time of day it is and normally a lot faster.
All police forces stipulate monitored intruder alarms are professionally maintained in order to get police response. This is often required to keep your insurance valid. Security systems under maintenance contracts allow you access to our 24/7 engineers.
On top of this, you have the peace of mind that your business is fully secured 365 days a year and have preferential rates on call-outs and replacement equipment.
We are happy to take over or repair systems installed by another company. We will normally send a surveyor to assess the system prior to sending a quotation for the necessary work.
Emergency call-outs to non SDS security systems are also provided, however these are dependent on the availability of resources and subject to our higher non-maintained call-out rate.
Our quality management systems and working practices are designed to ensure consistency, reliability and compliance with recognised industry standards. Regular internal reviews and rigorous processes help us maintain the high levels of performance our customers expect.
This reflects our commitment to quality assurance and demonstrates that SDS works to the highest recognised industry standards, providing dependable security solutions trusted by businesses across a wide range of sectors.
Free Property Security Survey from an experienced surveyor

Over 23 years of experience installing fire and security systems.
Over 30 years experience in installation and maintenance
Kent and London-based fitting/maintenance teams
SMS alerts or 24/7 security monitoring with police and keyholder notifications
All staff are police checked for complete peace of mind
Looking for Pricing?