The National Security Inspectorate is the UK's leading specialist security and fire safety Certification Body accredited by UKAS, the United Kingdom Accreditation Service. As a not-for-profit organisation, NSI independently verifies over 2000 companies, from premium local providers to premier national providers, against British, European and International Standards and NSI Codes of Practice, for the benefit and reassurance of homeowners, businesses, the public sector and the general public. NSI approval is the most highly trusted hallmark of excellence for providers of security and fire safety services. Choosing an NSI approved company ensures that the contractor you select works to the highest recognised industry standards as demanded by the Police, Fire and Rescue Services and insurance industry. NSI approved companies provide a wide range of services across the security and fire safety sectors including : - electronic security systems - intruder alarms / burglar alarms, CCTV, access control - fire detection and alarm systems - security guarding services / keyholding services - NSI is a Security Industry Authority (SIA) Assessing Body for the Approved Contractor Scheme (ACS) and a Regional Independent Audit Body for the Transported Asset Protection Association (TAPA EMEA).