Quality Standards
National Security Inspectorate (NSI) / NACOSS
The National Security Inspectorate (NSI) has been the UK’s leading inspectorate for the security industry for over thirty years. As an independent, not-for-profit organisation, NSI is the champion of high standards across the security and fire industries. Companies achieving approval through NSI must comply with relevant British and European standards as well as meeting the requirements of the police, fire authorities and insurance industry.
NSI has been protecting the customer’s interests by insisting on the highest standards and operating the toughest inspection regimes. Companies are audited regularly, by highly qualified full-time inspectors, to prove their ongoing competence and delivery of the highest standards. NSI is the only organisation in the UK operating industry-specific full compliance inspection schemes – approved companies must meet all of the requirements, all of the time.
NACOSS Gold companies
- have been thoroughly security vetted
- have ISO 9001:2000 certification
- are properly insured
- operate a 24 hour call out service (and respond within 4 hours)
- issue you with a Certificate of Compliance
- meet requirements of the Police, through the Association of Chief Police Officers (ACPO) Policy on intruder alarms, who will respond to confirmed alarm activations for monitored systems
- meet the Association of British Insurers (ABI) requirements. Insurers will usually insist that a NACOSS Gold company is used.







