Friday 6 December 2019
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The National Security Inspectorate (NSI) is recognised as the leading certification body for the security and fire protection industries in the UK.
For over 40 years, NSI has maintained a register of Approved Companies. These companies work to the highest industry standards demanded by the police, fire and rescue services and insurance industry.
Businesses and homeowners who choose NSI approved companies have the reassurance that their contractors are regularly audited by NSI to the latest standards, and provide high quality security systems, fire safety solutions and guarding services.
Find NSI approved companies and the services for which they hold approval in our NSI Company Finder.