Quality & Compliance

Our Security Accreditations — NSI & SSAIB

Q: What is NSI accreditation?

NSI (National Security Inspectorate) is the UK's leading UKAS-accredited certification body for the security sector. NSI-approved companies are subject to rigorous vetting, annual inspection and ongoing compliance audits. Using an NSI-approved installer gives you confidence that your system will be installed correctly, is eligible for a police URN, and will be accepted by major insurers.

Q: What is the difference between NSI and SSAIB?

Both NSI and SSAIB (Security Systems and Alarms Inspection Board) are UKAS-accredited certification bodies for UK security installers. Both offer broadly equivalent levels of recognition — police forces, insurers and regulatory bodies accept certifications from either body. NSI is slightly larger and more widely recognised, particularly for commercial installations.

Q: Do I need an accredited installer for my insurance?

Many commercial insurance policies require that security systems are installed and maintained by a company accredited by NSI or SSAIB as a condition of cover. We recommend checking your policy wording. As Prism's accreditations process completes, all new installations will carry the appropriate certification. Contact us to discuss your specific insurance requirements.

Recognised certifications are the mark of a professional security company. Prism is committed to working to the highest industry standards — and being independently verified to prove it.

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Why It Matters

Don’t Just Take Our Word for It

Industry accreditations from recognised bodies such as the NSI (National Security Inspectorate) and SSAIB provide independent verification that a security company operates to the standards required by insurers, police forces and regulatory bodies.

When you choose an NSI or SSAIB-approved installer, you can be confident that:

Your system has been designed and installed to the relevant British Standard
The installation company has been independently audited and inspected
Your alarm qualifies for police response (URN registration)
Your insurance company will accept the installation certificate
You have access to a formal complaints procedure

Important: Anyone can claim accreditation and put logos on a website. Always verify a company’s certification directly with the issuing body. NSI and SSAIB both provide online search tools to verify member status.

Accreditation Status

NSI GoldIN PROCESS

SSAIB ApprovedIN PROCESS

EMCS Monitoring PartnerACTIVE

ICO Registered
ZC183779 · Data Protection (UK GDPR)REGISTERED

Ajax Pro Authorized Integrator
GB20262824460 · Valid until 31 December 2026ACTIVE

Paxton Access Approved InstallerACTIVE

Accreditation status is updated on this page as certifications are awarded. We will always be transparent about our current certification position.

Certifying Bodies

The Certifications That Matter

NSI Gold

National Security Inspectorate — NACOSS Gold Scheme

The NSI is one of the UK's two leading independent certification bodies for the security sector. NSI Gold (also known as NACOSS Gold) is the highest level of approval for alarm and security system installers — recognised by police forces, local authorities and insurance companies as the benchmark standard.

NSI-approved companies are subject to regular, unannounced inspections to verify ongoing compliance with installation standards.

Verify on NSI.org.uk →

SSAIB

Security Systems & Alarms Inspection Board

SSAIB is the second leading UKAS-accredited certification body for the UK security industry. Like NSI, SSAIB approval means a company has been independently assessed against the relevant British and European Standards, and is subject to ongoing surveillance audits.

SSAIB-approved alarms also qualify for police URN registration and are accepted by all major insurance providers.

Verify on SSAIB.org →

Accreditations Explained

Frequently Asked Questions

What is NSI accreditation?NSI (National Security Inspectorate) is the UK's leading UKAS-accredited certification body for the security sector. NSI-approved companies are subject to rigorous vetting, annual inspection and ongoing compliance audits. Using an NSI-approved installer gives you confidence that your system will be installed correctly, is eligible for a police URN, and will be accepted by major insurers.

What is the difference between NSI and SSAIB?Both NSI and SSAIB (Security Systems and Alarms Inspection Board) are UKAS-accredited certification bodies for UK security installers. Both offer broadly equivalent levels of recognition — police forces, insurers and regulatory bodies accept certifications from either body. NSI is slightly larger and more widely recognised, particularly for commercial installations.

Do I need an accredited installer for my insurance?Many commercial insurance policies require that security systems are installed and maintained by a company accredited by NSI or SSAIB as a condition of cover. We recommend checking your policy wording. As Prism's accreditations process completes, all new installations will carry the appropriate certification. Contact us to discuss your specific insurance requirements.

Questions About Our Certification Status?

We're always happy to discuss our accreditations and what they mean for your installation. Get in touch today.