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NSI employs a strategic 2-tier approach to approvals, enabling companies to expand and develop their business while continuously enhancing customer trust in the NSI mark.

 

Organizations have the flexibility to enter at either level. NSI Silver specifically focuses on Product Certification, ensuring compliance with key sector-specific standards such as BS7858, BS8243, and BS 7499. The benefits of NSI approval are substantial and provide a clear advantage.

 

NSI approval is exclusively awarded to and retained by companies that consistently adhere to our demanding standards, which are regularly updated to reflect advancements in technology and evolving working practices. By selecting an NSI approved company, customers gain the assurance that their contractor consistently maintains a high level of competency in line with the most current industry best practices. With over four decades of experience in providing certification services, NSI has earned widespread recognition from consumers, specifiers, police forces, and insurance providers as a badge of trust and reliability.

 

Every NSI Approved Company demonstrably meets the technical requirements of the relevant scheme(s), adheres to all pertinent British Standards, provides thorough staff training and supervision aligned with industry best practice standards, maintains comprehensive insurance coverage to protect both customers and staff, and is subject to regular inspections by experienced NSI auditors who verify technical competence through on-site visits and head office management administration reviews.