The National Security Inspectorate (NSI) is an independent, not-for-profit approvals body providing inspection services for the security and fire industries. For over 30 years, NSI has been protecting the customer by insisting on the highest standards and operating the toughest inspection regime. Companies are inspected regularly by highly qualified, full-time inspectors, to prove their ongoing competence. NSI’s Customer Care support process reinforces the reliability and integrity of the companies it inspects. All NSI schemes meet or exceed the appropriate requirements of the Police, Fire Service and Insurers.

BS 7858

Code of practice for security screening of personnel employed in a security environment. This British Standard gives recommendations for the security screening of personnel to be employed in an environment where the security of people, goods or property is a significant feature of the employing organisation’s operations.

BS EN ISO 9001

An internationally recognised Standard. It is a document, which defines the elements of organisation required by a company to operate & maintain a Quality Management System, i.e. Management Responsibility, Resource Management, Product Realisation, Measurement, Analysis & Improvement.

BS 5839-1

Fire detection and alarm systems for buildings. Code of practice for system design, installation and servicing.This part of BS 5839 provides recommendations for the planning, design, installation and maintenance of fire detection and alarm systems in and around buildings.

BS EN 50131

Standard for the installation of Intruder Alarm Systems in buildings. Recommendations for the planning and installation of intruder and/or deliberately-operated alarm systems in buildings.

BS 8243

Code of practice for the installation and configuration of Intruder Alarm Systems designed to generate confirmed alarm conditions.

PD 6662

Scheme for the application of European Standards for Intruder and Hold-up Alarm Systems.


Standard for commissioning, maintenance and remote support of Intruder Alarms.


NSI Standard for the planning, installation, and maintenance of Closed Circuit Television Systems for security applications.

BS 8418

Remote Monitored CCTV. BS8418 is the standard for detector activated remotely monitored CCTV systems in the UK. It was first published in 2003 and soon became endorsed by the Association of Chief Police Officers (ACPO) in their security systems policy and as such is the only recognised way of obtaining a Police URN for such CCTV systems.


NSI Standard for the installation of Access control systems for security applications.

SSQS 101

This quality Schedule has been developed to provide NACOSS Gold Approved companies with the means by which their compliance with BS EN ISO 9001 can be evaluated. Successful assessment leads to the award of the NSI Certificate of approval, the right to use the NACOSS Gold logo and appropriate listing and approval in official publications.


The National Police Chiefs’ Council (NPCC) enables independent chief constables and their forces to work together to improve policing for the public.
We coordinate the operational response across the service to the threats we face in the UK, such as terrorism, organised crime and national emergencies.
Working with the College of Policing, we implement standards and develop national approaches to finance, use of technology and human resources.
Through Chief Constables’ Council, the leaders of service take important decisions about how they will operate to meet the demands of the day.
Chief officers speak on behalf of the NPCC to explain the operational police response on a range of issues to the public and to government.


(Association of British Insurers) represents the collective interests of the UK’s insurance industry. The Association speaks out on issues of common interest; helps to inform and participate in debates on public policy issues; and also acts as an advocate for high standards of customer service in the insurance industry.


Over the years local authority health and safety and procurement professionals, with the support of the Health and Safety Executive, have developed the Contractor Health and Safety assessment scheme (CHAS). The scheme is available for use by any public and private sector organisations to use when shortlisting contractors, suppliers and consultants (companies) who apply to work for them. It provides information about the health and safety part of their application. Companies apply to join the scheme so everyone knows they meet acceptable standards of health and safety compliance. Clients from both the public and private sectors are users of the scheme and our database.


Constructionline is a public private partnership between the Department of Business, Enterprise and Regulatory Reform (formerly the DTI) and Capita Business Services. As a national online database, it is the UK’s largest register for pre-qualified contractors and consultants. Its aim is to improve efficiencies for buyers and suppliers in the construction industry, specifically by reducing the duplication of work and administration relating to the process of pre-qualifying suppliers for construction contracts.

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