NSI Approved Alarm System: Securing Your Business

Oct 3, 2023

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In today’s digital landscape, data breaches and security threats have become commonplace. Subsequently, many businesses are suffering and the need for robust security measures is non-negotiable. At OHEAP, ensuring the safety and integrity of sensitive information is paramount. We believe in providing products with recognised and trusted security certifications. Therefore we offer security systems with NSI alarm certification (formerly known as a NACOSS approved alarm systems).

On this page, we will delve deeper into the world of NSI certification. We will demystify its significance and explain how NSI approved suppliers benefit your company.

As a business owner aiming to enhance your organisation’s security, this will serve as your ultimate guide.

Understanding NSI Certification

NSI is a leading certification body for security and fire safety in the UK. For this reason, understanding NSI Certification and ‘NSI Approved’ is crucial for businesses and consumers wanting to ensure the highest industry standards.

This certification signifies that a security provider, such as OHEAP, adheres to rigorous quality and performance criteria. In essence, we offer peace of mind to clients and end-users, as well as a few benefits!

What Does NSI Stand For?

NSI is short for the National Security Inspectorate. A leading certification body that sets the benchmark for security and fire safety services in the UK and Ireland.

  • National Security Inspectorate.
  • Leading certification body in the UK and Ireland.
  • Dedication to delivering reliable and efficient security services.

Achieving NSI certification signifies not only compliance with rigorous industry standards but also a commitment to providing reliable and effective security solutions.

What Does NACOSS Stand For?

The National Security Inspectorate (NSI) was established in 2001 through the amalgamation of NACOSS and ISI.

  • NACOSS is short for the National Approval Council for Security Systems.
  • ISI is short for the Inspectorate of the Security Industry.

It stands as the foremost certification authority in the UK’s security and fire protection sectors. Since 1971, NSI has safeguarded businesses by conducting rigorous audits of security service providers such as OHEAP, ensuring top-notch security standards.

NSI approved Gold and Silver
NSI approved (gold)

The Significance of NSI Certification

The National Security Inspectorate (NSI) is a leading certification body in the UK.

As mentioned above, they provide inspection services for the security and fire protection industry. NSI certification is significant for several reasons:

Quality Assurance

NSI certification ensures that companies in the security and fire protection sectors adhere to high-quality standards. In fact, businesses that have been NSI approved have demonstrated their commitment to delivering reliable and effective solutions.

Being an NSI Gold-approved company ensures we:

  • Adhere to high-quality standards.
  • Demonstrate our commitment to reliable solutions.
  • Have relevant NSI approved technical experience.
  • Undergo a rigorous application process before approval is granted.
  • Have reputable Directors & leaders with relevant business experience.
  • Undergo effective employee security screening.
  • Have suitable insurance and business premises.
  • Provide ongoing appropriate training for our employees.
  • Ensure the required level of skill.
Fire Safety Training
Customer Confidence

Customers will frequently gravitate towards making purchases from NSI approved companies. In fact, NSI certification serves as a robust testament to the commitment of any certified company. OHEAP offer the highest standards in our products and services.

  • Assurance comes with certification.
  • Certification guarantees quality and reliability.

NSI elevates the level of trust customers place in these companies. Additionally, it bolsters their confidence in the effectiveness of these security and fire safety products. We believe, that by choosing to work with NSI-certified entities, customers are investing in a partnership that prioritises quality and safety.

The rigorous standards upheld by NSI approved companies create a benchmark for excellence within the industry.

Lower Insurance Premiums

Companies, like OHEAP, that have been approved by NSI are acknowledged by both the police and the insurance sector for their expertise in providing quality security and fire safety services. The security solutions we can offer will effectively mitigate risks which in turn will lower your company’s insurance costs.

If you choose OHEAP as your security systems installer, you’ll receive an exclusive ‘NSI Certificate of Compliance.’ Your insurance provider might request this certificate as evidence that your property fulfils essential requirements for insurance conditions.

Better yet, having NSI approved CCTV, access control or an NSI alarm (NACOSS approved alarm system) could also qualify for a discount on your insurance premium.

NSI Certification Categories Explained

Both NSI Gold and Silver approved companies comply with identical technical standards for their installations.

NSI Gold companies adhere to the industry’s most rigorous technical criteria and uphold a dedication to continuous enhancement, including scrutiny of their ISO 9001 Quality Management System.

NSI Silver companies adhere to the technical standards outlined in their Certificate of Approval. This ensuring compliance with industry requirements.

NSI Silver Logo

NSI Fire Gold Approval Criteria

NSI Fire Gold Approval Criteria Schedule

  • BS EN ISO 9001:2015: Quality Management.
  • BS 5839-1:2017: Fire Detection & Fire Alarm Systems.
  • SP203-1: BAFE Scheme Document.

NSI NACOSS Gold Approval Criteria

  • BS EN ISO 9001:2015: Quality Management.
  • BS 7858:2019: Screening of Individuals.
  • 8418:2021: Detector-activated Video Surveillance Systems (CCTV).
  • PD 6662: Intruder and Hold-up Alarm Systems.
  • NSI NCP 104: Video Surveillance Systems (CCTV).
  • NSI NCP 109: Access Control Systems.
NSI Approved, Silver

NSI Fire Silver Approval Criteria

NSI Fire Silver Approval Criteria Schedule

  • BS 5839-1:2017: Fire Detection & Fire Alarm Systems.
  • SP203-1: BAFE Scheme Document.

NSI NACOSS Silver Approval Criteria

  • BS 7858:2019: Screening of Individuals.
  • 8418:2021: Detector-activated Video Surveillance Systems (CCTV).
  • PD 6662: Intruder and Hold-up Alarm Systems.
  • NSI NCP 104: Video Surveillance Systems (CCTV).
  • NSI NCP 109: Access Control Systems.

Protecting Your Business Assets

Commercial premises need intruder alarms, video surveillance systems and access control systems. The reason is primarily related to the security, safety and protection of our business assets.

Here are the main reasons why these systems are essential for commercial establishments:

Why Your Assets Need Protection

In a commercial enterprise safeguarding valuable assets is vital. Many businesses will have expensive tools that are crucial to their business operations. If these items are damaged or stolen it could be a detriment to your company and put a halt to your cashflow.

We offer products and services including NSI alarms, video surveillance systems and access control. These services stand as integral components in fortifying these assets against potential threats such as theft, vandalism, or damage.

Also, in the modern digital landscape, the protection of sensitive customer data has evolved. Businesses are obligated to safeguard customer information to uphold UK data protection regulations. The consequences of data breaches are significant, often resulting in severe penalties, fraud and irreparable damage to a company’s reputation. Hence, it is imperative for businesses to invest in robust data security measures to prevent unauthorised access and protect the confidentiality and integrity of customer data.

Examples of Digital Assets
  • Documents
  • Customer Data
  • Password Information
  • Banking Information
  • Photos/Videos
Examples of Physical Assets
  • Machinery
  • Tools/Equipment
  • Vehicles
  • Money
Examples of Protection Against These Threats
  • Access Control
  • NSI Alarms (NACOSS Approved Alarm Systems)


Compliance with Industry Standards

Industry Regulations and NSI Alarm Systems

In England, alarm systems must comply with British Standards. It’s important to ensure that all products purchased or installed adhere to the appropriate legislation. If you’re uncertain, OHEAP Fire & Security will be able to assist you with this.

How NSI Approval Ensures Compliance

Obtaining NSI approval serves as an assurance that a company can adhere to the pertinent UK standards. Upon approval, we are committed to a continual audit program. We must undergo regular audits and guarantee compliance with the most recent applicable standards.

NSI approval instils confidence in business owners regarding a company’s professionalism and ability to meet the required standards, ensuring peace of mind in their choice of service provider.

door access control security
Facial recognition security cctv

Enhanced Security Measures

NSI Access Control Systems

Electronic access control systems typically depend on various types of credentials, such as:

  • Personal Identification Numbers (PINs).
  • Tokens (swipe cards and proximity cards).
  • Biometric data (fingerprints).

Access points can be set up to allow entry within secure areas to either:

  1. All users.
  2. Specific user groups.

In fact, these access points can be programmed to permit entry only during specific times of the day. To prevent unauthorised individuals from tailgating, anti-passback measures can be employed. This reduces the risk of unauthorised access to sensitive areas.

We would also opt to integrate CCTV surveillance or NSI alarm systems alongside your access control system to ensure that credentials are not being misused.

This is the NCP 109 NSI Code of Practice for electronic access control systems. This code of practice requires designers and installers to consider these factors during the design and risk assessment stages of their security process.

door access control security
Facial recognition security cctv

Installers holding NSI Gold or Silver approval are recognised by the Police.

NSI Alarm Systems (NACOSS Approved Alarm Systems)

Intruder alarms act as a visible deterrent. According to the Homewatch Group, a “2023 study showed that 60% of burglars would seek an alternative target if an alarm was present”. Many commercial alarms will not only produce a loud sound but also notify a remote monitoring centre when a break-in occurs.

Remotely monitored NSI alarm systems will send signals to a 24/7 response centre. This will then alert:

  • The Police.
  • Keyholders.
  • Keyholding services.

Rest assured that when you choose an NSI alarm system company, like OHEAP, you’re selecting a competent partner. We will:

  1. Evaluate your requirements.
  2. Conduct a thorough risk assessment on your property.
  3. Plan and install a security NSI alarm system that adheres to the standards mandated by the Police and your insurance provider.

To ensure a Police response to an alarm in the UK, it is crucial to engage the following services:

  1. An installer approved and recognised by the Police
  2. An approved Alarm Receiving Centre (ARC).

The Police require installation and regular maintenance of your alarm system. Your NSI alarm system installer is equipped to handle this requirement efficiently. We can assist with this as OHEAP are NSI Gold approved!

Installers holding NSI Gold or Silver approval are recognised by the Police.

Certified NSI alarm installers offer a comprehensive contract. This encompasses alarm monitoring services from an NSI Alarm Receiving Centre, along with maintenance, unless you choose otherwise.

Additionally, we provide:

  • A Certificate of Compliance: Demonstrating adherence to PD 6662 or BS 8418 standards for your installation.
  • Guidance on Obtaining a Police Unique Reference Number (URN): Ensuring your alarm system’s registration with the local Police Force.

Also, please note that: immediate police response will be withdrawn following three false alarm calls in a rolling twelve-month period. 


In conclusion, navigating the complex landscape of digital security requires a deep understanding of industry standards and certifications. This blog emphasises the pivotal role played by the National Security Inspectorate (NSI) in ensuring businesses adhere to rigorous quality benchmarks. NSI certification not only signifies compliance but also instils confidence in customers, enhancing their trust in the services provided.

The blog underscores the importance of robust security measures in safeguarding valuable assets, both physical and digital. By integrating cutting-edge technologies such as intruder alarms, access control and video surveillance, businesses can mitigate risks and protect against potential threats.

NSI-approved companies not only meet industry regulations but also contribute to lowering insurance premiums, making them a prudent choice for businesses seeking reliable security solutions.

In this ever-evolving digital era, the need for certified and trusted security providers cannot be overstated. NSI certification not only sets the benchmark for excellence within the industry but also ensures peace of mind for business owners and individuals alike. By choosing NSI-certified entities like OHEAP, businesses are not just investing in security; they are investing in a partnership that prioritises quality, safety and unwavering commitment to customer protection.

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