We believe our NSI Gold security systems service and maintenance department to be one of the best in the industry.

SDS Security is one of the largest independent NSI Gold security companies in London and all our staff are experienced and friendly and take great pride in offering a personal, flexible and efficient service, the customer really is ‘King’.

All our staff are fully security screened and are continually assessed to ensure they are fully conversant with the latest technology and security products. The vast majority of our staff have been with SDS for over 10 years.
Dependent upon the type and age of system installed we can carry out remote diagnostics and servicing negating the need for a site visit.

Why have a maintenance agreement ?

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 24/7 engineers and continues to validate your NSI certificate. SDS will also give you preferential rates on callouts and replacement equipment.

Non SDS systems.

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 callouts to non SDS security systems are also provided, however these are dependant to the availability of resources and subject to our non-maintained callout rate.