Insights

Certification leadership NSI is the UK’s most recognised certification body for fire and security with a long-standing track record and a broad certification portfolio, presenting opportunities to upsell extended audit and compliance services to current clients and partners.

Growth opportunities Recent leadership hires in marketing and operations alongside ongoing awards participation indicate an active push to expand brand reach and client engagement, signaling sales opportunities in new market segments and through enhanced thought leadership programs.

Digital modernization A diverse tech stack including cloud, content, analytics, and security tools suggests NSI values digital efficiency and customer experience, implying potential for upsell of secure client portals, personalized audit dashboards, and integrated marketing automation for member organizations.

Industry engagement Active participation in Outstanding Security Performance Awards and Thought Leadership Summits positions NSI as a central figure in industry standards, creating openings for partnerships, co-hosted events, and joint accreditation offerings with other safety and compliance providers.

Mid-market potential With a mid-size employee base and revenue in the lower end of enterprise ranges, NSI represents a target for scalable, value-based certification programs, managed services, and tiered support packages tailored to growing security and fire protection companies.

Similar companies to NSI - National Security Inspectorate

NSI - National Security Inspectorate Tech Stack

NSI - National Security Inspectorate uses 8 technology products and services including Sage Intacct, Hotjar, Sucuri, and more. Explore NSI - National Security Inspectorate's tech stack below.

Media & News

NSI - National Security Inspectorate's Email Address Formats

NSI - National Security Inspectorate uses at least 3 email formats:
NSI - National Security Inspectorate Email FormatsExamplePercentage
First.Last@nsi.org.ukJohn.Doe@nsi.org.uk
96%
First.Middle@nsi.org.ukJohn.Michael@nsi.org.uk
2%
First@nsi.org.ukJohn@nsi.org.uk
2%

Frequently Asked Questions

What is NSI - National Security Inspectorate's official website and social media links?

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NSI - National Security Inspectorate's official website is nsi.org.uk and has social profiles on LinkedIn.

How much revenue does NSI - National Security Inspectorate generate?

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As of August 2026, NSI - National Security Inspectorate's annual revenue is estimated to be $1M - $10M.

What is NSI - National Security Inspectorate's SIC code and NAICS code?

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NSI - National Security Inspectorate's SIC code is 7381 - Detective, Guard, and Armored Car Services and NAICS code is 5616 - Investigation and Security Services.

How many employees does NSI - National Security Inspectorate have currently?

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As of August 2026, NSI - National Security Inspectorate has approximately 89 employees across 2 continents, including Europe and Asia. Key team members include Chief Executive Officer: R. F., Head Of Marketing: J. W. and Head Of Information Systems: M. P. Explore NSI - National Security Inspectorate's employee directory with LeadIQ.

What industry does NSI - National Security Inspectorate belong to?

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NSI - National Security Inspectorate operates in the Security and Investigations industry.

What technology does NSI - National Security Inspectorate use?

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NSI - National Security Inspectorate's tech stack includes Sage Intacct, Hotjar, Sucuri, WordPress, CookieYes, Mimecast, HubSpot and Microsoft Azure.

What is NSI - National Security Inspectorate's email format?

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NSI - National Security Inspectorate's email format typically follows the pattern of First.Last@nsi.org.uk. Find more NSI - National Security Inspectorate email formats with LeadIQ.

When was NSI - National Security Inspectorate founded?

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NSI - National Security Inspectorate was founded in 1971.
NSI - National Security Inspectorate logo

NSI - National Security Inspectorate

Security and InvestigationsEngland, United Kingdom51-200 Employees

NSI - National Security Inspectorate operates as the United Kingdom’s principal specialist certification body for security and fire safety and is accredited by UKAS. It is a not-for-profit organization that independently verifies over 2,000 providers against British, European and International standards and NSI Codes of Practice, providing assurance to homeowners, businesses, and the public sector. The NSI approval is used as a benchmark of compliance by policing, fire and rescue services and the insurance industry. Based in Maidenhead, England, NSI covers a broad spectrum of services within the security and investigations field, including electronic security systems, fire detection and alarm systems, and security guarding and keyholding. It also serves as a Security Industry Authority Assessing Body for the Approved Contractor Scheme and as a Regional Independent Audit Body for the Transported Asset Protection Association (TAPA EMEA). In 2025, NSI appointed Jon Webster as Head of Marketing.

Section iconCompany Overview

Website
nsi.org.uk
SIC Code
7381 - Detective, Guard, and Armored Car Services
NAICS Code
5616 - Investigation and Security Services
Founded
1971
Employees
51-200

Section iconFunding & Financials

  • $1M - $10M

    NSI - National Security Inspectorate's revenue is estimated to be in the range of $1M - $10M

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