Why choose NSI as your certification body?

Why choose NSI as your certification body?

Why choose NSI as your certification body?

Why choose NSI as your certification body?

NSI approval is the most widely recognised and highly trusted hallmark for buyers of security and fire safety services across the UK. 

With 50 years’ experience in certification services, NSI approval of over 2000 organisations ranging from independent, local providers to those with national reach provides the highest level of reassurance for buyers and specifiers.


Why become NSI approved?

Display the coveted, nationally recognised NSI hallmark of approval on your website, advertising materials and vehicles - effectively communicating your professional status

Increase confidence and trust amongst your clients that your business is independently approved and audited by a not-for-profit, specialist certification body

Benefit from NSI's expert in-house audit team with a comprehensive understanding of relevant British and International standards

An assigned NSI auditor and operations coordinator ensure your approval is well managed

NSI’s regular communications and technical bulletins keep you abreast of the latest industry developments

NSI audits provide valuable insight into your processes, helping you to gain efficiencies and improve business performance

NSI’s Access to Standards service provides preferential rates and access to the latest standards updates

Increase opportunities to win new contracts through tenders and buyers specifying NSI approval

Access to NSI training courses ensure your team is up-to-date with the application of standards

Take advantage of preferential rates on practical Tavcom training courses

NSI Company Finder listing helps connect you with new customers

Benefit from NSI’s ongoing promotion of NSI approval to buyers of security and fire safety

NSI approval options


NSI’s premier schemes are designed for companies who meet the industry’s highest technical standards and maintain a commitment to continual improvement with an ISO 9001 Quality Management System.


NSI's Silver schemes are designed as a stepping stone towards Gold schemes.

It requires companies to meet the same high level of technical competence as the Gold schemes.

NSI Gold and Silver UKAS accreditations for NSI approval

NSI: accredited by the United Kingdom Accreditation Service (UKAS)

Recognised by government, UKAS assesses certification bodies against internationally agreed standards, providing assurance of NSI's competence, impartiality and integrity.

Gold approval signifies companies operate an ISO 9001 Quality Management System to ISO/IEC 17021-1:2015 (management systems certification) and compliance with ISO/IEC 17065:2012, sector-specific product certification standards.

ISO 9001 plays a critical part in setting a framework for continuous improvement across the organisation and NSI has long realised the importance of integrating the assessment of the management system with the technical standards, bringing significant benefit to approved companies, and buyers of security and fire safety services. 

Silver approval signifies companies compliant with ISO/IEC 17065:2012, sector-specific product certification standards.


To apply for NSI approval, please complete our online Enquiry Form

View all NSI approval schemes