C&C Security Systems, Established in 1984

Security guide

What Does NSI NACOSS Gold Approval Mean?

NSI NACOSS Gold is an approval scheme for security companies. It concerns the approved services and the company’s quality management, rather than being a promise that every alarm package suits every property. Check the current provider, the scope of approval and the specification being offered.

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Family-run businessEstablished in 1984

NSI NACOSSGold Approved

Covering London,Kent, Essex and Surrey

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C&C Security Systems · Updated 30 September 2026

What the approval tells you

NSI describes NACOSS Gold as a scheme covering the design, installation and maintenance of electronic security systems, including intruder alarms, CCTV and access control. Gold approval combines the relevant technical requirements with a quality-management framework based on ISO 9001. It is therefore useful information when assessing an installation company, alongside the actual proposal for your premises.

The important distinction is between a company's approval and an individual customer's requirements. A logo on a website does not tell you which rooms an alarm will cover, where cameras will look or which monitoring service has been selected. Those details belong in the specification and quotation.

Check the company and its scope

Use NSI's company information and the provider's current certificate to check the business name and approved activities. Trading names and legal names can differ, so make sure you are checking the company that will undertake the work. Where the scope is unclear, ask for an explanation before relying on a broad statement such as approved security installer.

C&C's supplied certificate names C&C Security Ltd trading as C and C Security Systems and lists the design, installation and maintenance of intruder and hold-up alarms, CCTV and access control. The certificate is available through our accreditation section. Check its current status and scope when making a procurement decision, especially where your insurer or another party has specified an approval requirement.

Keep insurance questions specific

If an insurer has set conditions, obtain the wording and give it to the installer before a proposal is agreed. Requirements may concern the system or service arrangement as well as the company. Ask the insurer to clarify anything ambiguous rather than assuming an accreditation badge answers every policy question.

Do not choose an alarm solely because you expect an automatic reduction in premiums. That is a separate question for your insurer. The quotation should address the security and operating requirements of the building, while the insurance discussion establishes what applies to the particular policy.

Compare the proposed work

When comparing companies, read the scope as carefully as the total price. Identify the areas included, equipment to be installed, existing parts to be retained and any limitations or dependencies. An apparently similar quotation may cover a different amount of work or a different service after installation.

Ask who will explain normal operation at handover and what information you will receive. For an occupied business, make sure the responsible users can attend. For a home, the controls should be understandable to the household members who will operate them. Approval is relevant, but it does not replace that practical conversation.

Ask separately about monitoring and maintenance

Monitoring and maintenance are not interchangeable. Discuss what each proposed service includes, its continuing cost and the responsibilities retained by the customer. Do not infer a particular response arrangement simply because the installation company holds approval or the system has a communications feature.

For an existing installation, explain any current provider or agreement before a change is planned. Ask what assessment is needed to take over maintenance and whether equipment or records are missing. A clear transition plan is more useful than assuming a new service starts automatically when a quotation is accepted.

Prepare your enquiry

Give C&C the property postcode, its use and a short account of what you need. Include any written insurer requirements and identify the person who can authorise work. Mention shared access, building restrictions and relevant existing equipment without sending alarm codes or passwords.

The team can discuss an initial estimate or arrange a survey where appropriate, then provide a free quotation. Use the approval information as one part of that decision, alongside a specification you understand, clear operating arrangements and the support you want after installation.

Further reading: NSI: NACOSS security systems certification · NSI: information for facilities managers

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Our Accreditations

NSI Gold certification artwork with UKAS product certification and management systems marks

NSI NACOSS Gold approved

Our approval covers the design, installation and maintenance of intruder alarms, CCTV and access control systems.

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NSI NACOSS Gold approved · Established in 1984

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