Intruder Alarm Logbook: What UK Businesses Must Record
Intruder alarm systems are a standard feature of UK commercial and residential premises. But the logbook that should accompany every alarm system — recording maintenance, activations, false alarms, and engineer visits — is frequently missing or incomplete. This matters for insurance, for police response, and for demonstrating due diligence if an alarm failure contributes to a loss.
Why Alarm Systems Need a Logbook
An intruder alarm logbook serves as the maintenance and operational record for the system. It documents that the system is being properly maintained by a competent engineer, that activations are being recorded and investigated, and that false alarms are being managed — an important consideration given that excessive false alarms can result in the police withdrawing response to a premises.
Insurance policies covering commercial premises against theft and burglary typically include conditions requiring that alarm systems are maintained in accordance with the manufacturer's recommendations and relevant standards. The alarm logbook is the primary evidence that this condition is being met.
What an Intruder Alarm Logbook Must Record
A comprehensive alarm logbook should record the date and details of every maintenance visit, including the name of the engineer and their company, the work carried out, any defects identified and remedial action taken, and confirmation that the system was tested and found operational at the end of the visit. It should also record every activation — whether genuine, false, or due to a fault — including the date, time, cause where known, and the response taken. Any changes to the system — new zones, updated codes, equipment replacements — should be recorded with the date and the authorising person.
NSI and SSAIB Standards
Alarm systems installed and maintained to National Security Inspectorate or Security Systems and Alarms Inspection Board standards — the two main industry accreditation bodies in the UK — carry greater evidential weight with insurers and police. NSI and SSAIB-certified engineers must provide service records after every maintenance visit. These records should be retained in the alarm logbook.
Many insurance policies specify that alarm systems must be installed and maintained by an NSI or SSAIB-accredited company. Check your policy conditions and retain certificates of conformance from the installing company alongside the logbook.
False Alarm Management
The police operate a false alarm management policy — premises that generate excessive false alarms may have police response removed. Recording every activation in the alarm logbook, including the cause and corrective action taken, demonstrates active management of the system and supports the case for continued police response if the issue is ever raised.
How Long Must Alarm Records Be Kept?
Alarm logbooks and service records should be retained for the period the system is in operation plus at least five years. In the event of a burglary claim, records showing the alarm was properly maintained and operational at the time of the incident are critical evidence.
Key Takeaways
- Every maintenance visit must be recorded — engineer details, work carried out, defects, and post-visit test confirmation.
- Every activation must be logged — date, time, cause, and response — regardless of whether it was genuine or a false alarm.
- NSI or SSAIB accreditation of the installing and maintaining company adds evidential weight with insurers and police.
- Excessive false alarms can result in police response withdrawal — the logbook demonstrates active management.
- Insurance policies typically require alarm maintenance — the logbook is the primary evidence of compliance.
- Records should be retained for at least five years after the system ceases to be in use.