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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 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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Companies providing these services operate across the UK regardless of location. By selecting one of these services locational search options are unavailable.

 

Latest news

Read the latest Meet the Installer interview in @psimagazine featuring Matthew Stanley of @AstraSecLtd >> https://t.co/y59X4O8OcG #NSIapproved #SecuritySystems https://t.co/xRUR1tyenO
IFSEC & FIREX Tech Talks: Registration now live!
Hear from leading suppliers about the latest developments
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Thank you @OmegaSecurity1, it’s great to hear your positive feedback on the remote audits being conducted as part of NSI’s blended audit strategy #NSIapproved https://t.co/spiVI6oFO8
PSI Magazine - Meet the Installer December 2020
Read the latest Meet the Installer interview featuring Astra Security
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High Alert
Read more in the latest edition of Fire & Risk Management
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Fixing Weak Links in Security Staff Supply
Read Richard Jenkins' latest article in HEFMA Pulse
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New compulsory requirements for initial ECS card applications for Fire, Emergency and Security Systems ECS occupat...
Find out more
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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.
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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.

Find an NSI approved company