The National Security Inspectorate (NSI) is the UK’s leading independent UKAS-accredited certification body approving more than 1,800 companies for a wide range of services within the security and fire safety sectors.
For over 45 years, the NSI has been protecting businesses, homeowners and the general public alike by providing rigorous auditing through its highly-trained team of in-house experts.
The buyers of security services who choose NSI-approved companies can be assured of security and fire safety services delivered by businesses committed to quality and who operate in accordance with the highest British and European Standards, Codes of Practice and certification schemes developed by industry bodies and associations.