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NSI Gold: NSI approved companies compliant with NSI’s Gold Approval Criteria, NSI’s Regulations, NSI’s Quality Schedule, the ISO 9001 Quality Management System standard and defined technical standards.

NSI Silver: NSI approved companies compliant with NSI’s Silver Approval Criteria, NSI’s Regulations and defined technical standards.

CerticCS: NSI approved companies in the Republic of Ireland compliant with specific PSA standards and/or the ISO 9001 Quality Management System standard.

SIA ACS: Security Industry Authority Approved Contractors assessed by NSI.

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Look out for the NSI hallmark

It’s the most widely recognised mark of approval in security and
fire safety. NSI approval tells you the company is:

 

Technically Competent

Working to International and British Standards and NSI Codes of Practice, teams have relevant technical experience

Professional

Gold approval - operating a Quality Management System to ISO 9001 and NSI Quality Schedules

Trusted

Reputable Directors & leaders with relevant business experience and effective employee security screening

Young family returning to a safe and secure home
Home security and fire safety you can trust
As a householder you want to be sure your security and fire safety providers are trustworthy with the knowledge to translate your needs into a solution that is right for you.
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Protecting the workplace
Protecting the workplace
Security and fire safety in your workplace are of the utmost importance. NSI approved companies ensure peace of mind whether installing a fire or intruder alarm, CCTV system, servicing your fire extinguisher or providing door supervision.
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NSI approved companies keep up to date with the latest developments in standards and codes of practice for the benefit of their customers.
NSI approved companies
Approved companies keep up to date with the latest developments in standards and codes of practice for the benefit of their customers.
Learn more
Looking for NSI approval?
Looking for NSI approval?
Independent, regular assessment by NSI's expert team of auditors demonstrates your company is compliant with British and International Standards and relevant Codes of Practice, providing reassurance for your clients.
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Over 1800 approved companies subject to annual NSI audit.

Over 2.75 million Certificates of Compliance for security and fire safety installations issued by NSI approved companies.

National Network of expert security and fire safety auditors.

Latest news

Congratulations to NSI's newly approved companies who achieved approval in March 2021. A fantastic achievement, demonstrating their commitment to high standards and reassurance for their clients. More: https://t.co/a2S1RW1r1l #NSIapproved #RaisingStandards https://t.co/u9YkvUjkew
NSI New Approvals - March 2021
Congratulations to the following organisations
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As large venue operators & other sports facilities managers prepare to reopen in line with local Covid-19 requirements read our latest article in @FSMmagazine1 on the need to adequately manage security contracts and protect against rogue labour. Read here: https://t.co/SHVT0rQX8s https://t.co/53RJ5XxOoE
Post-Covid Sporting Venue Measures to Address Rogue Labour Risk
Richard Jenkins features in the latest Football and Stadium Management Magazine
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British Security Awards 2021 - NSI to Sponsor Apprentice of the Year Award
Entries for all categories close on 16 April
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On Inspection
Read Richard Jenkins' second instalment of 'On Inspection' in Security Matters Magazine
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Ready for the big switchover
NSI's Head of Schemes, Matthew Holliday, features in the latest PSI Panel on digital 'All-IP'
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NSI New Approvals - February 2021
Congratulations to the following organisations
Read More

Find an NSI approved company