Protect Against Smash-and-Grab Raids.
Here's the Deterrent That Stops Them.
Armed and organised smash-and-grab raids on UK jewellers have risen sharply. Density security fog starts discharging in under one second after a confirmed trigger. The time needed to obscure a zone depends on the model, protected volume, layout and ventilation, and is confirmed during the site survey. Density is approved to be used in conjunction with NSI and SSAIB security systems.
Get a Free Jewellery Security Site SurveySector Challenges
Smash-and-Grab Raids:
Jewellers face the risk of organised smash-and-grab raids. Organised criminal gangs can smash a display case and clear its contents in under 60 seconds — far faster than any alarm response or police attendance. Passive CCTV and standard alarms record the crime; they don't stop it.
Specialist Insurance Conditions:
Most specialist jewellery insurance policies now require active security, approved for use with NSI and SSAIB systems, as a condition of cover for high-value stock. Without the right active-security layer, a single raid can result in a disputed claim — or full policy exclusion. NSI certification is not optional for this sector; it is the baseline.
High-Value Portable Stock:
Jewellery is uniquely attractive to thieves: extraordinarily high value relative to volume, easily concealed, and rapidly converted. Display cases concentrate thousands of pounds of stock in an instantly accessible location — making every unprotected jeweller a target every night they are closed.
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Security Fogging — How It Works
Comprehensive Security for Jewellers & Showrooms
Jewellers face a uniquely acute security challenge. High-value stock concentrated in glass display cases, visible from the street, in premises open to the public by definition — it is a combination that organised criminal networks actively exploit. The modern smash-and-grab raid is a practised, timed operation: entry is forced, cases are targeted within seconds, and exit is completed before most alarm systems have even finished dialling an ARC. By the time police arrive, the raiders are gone. Density's security fogging technology is built specifically to close this window of vulnerability.
Density security fog starts discharging in under one second after a confirmed trigger. The time needed to obscure a zone depends on the model, protected volume, layout and ventilation, and is confirmed during the site survey. Unlike passive CCTV and standard PIR alarms, Density provides active deterrence: the raid cannot continue in zero visibility, and in the overwhelming majority of cases, intruders abandon the attempt entirely. Density is approved to be used in conjunction with NSI and SSAIB security systems, a Density installation provides active protection; confirm any policy requirements with your insurer.
Products for Every Jewellery Showroom
Density® UNIK
Cold-fog, battery unit sited over the display cases and safe — obscures the highest-value point in seconds, even with no mains run.
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Density® 600C Line
Whole-shop cover for a compact showroom, alongside point protection on the cases.
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Density® 2400C Line
For larger showrooms, with the documentation specialist insurers expect.
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Tell us about your premises and we'll recommend the right Density system — no obligation, no sales pressure, just the right solution for your site. Not sure which unit is right for you? Compare the best security fog systems for 2026.
Why Jewellers Rely on Active Deterrence
A smash-and-grab raid on a jeweller is over in under a minute. Standard alarm and CCTV systems trigger after entry — by which point a raider is already at a display case. Density security fog starts discharging in under one second after a confirmed trigger. The time needed to obscure a zone depends on the model, protected volume, layout and ventilation, and is confirmed during the site survey. The raid cannot continue. In zero visibility, it stops.
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Lightning-fast deployment — <1s to activate
Density security fog starts discharging in under one second after a confirmed trigger. The time needed to obscure a zone depends on the model, protected volume, layout and ventilation, and is confirmed during the site survey. The barrier is physical, not electronic, and cannot be bypassed or switched off from outside.
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NSI and SSAIB approved systems
Density is approved for use with NSI and SSAIB security systems. Your insurer or broker must confirm the security requirements and terms of your individual policy; product documentation is available to support that discussion.
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Proven abandonment effect
Organised raid teams identify protected premises in advance. The visible presence of a Density unit and warning signage causes the majority of planned attacks to be abandoned before entry is even attempted.
Key Benefits at a Glance
Lightning-Fast Deployment — <1s to Activate
Fog fills your showroom floor faster than a raider can reach a display case after forced entry.
Approved in use with NSI and SSAIB security systems — Insurance Recognised
Density is approved for use with NSI and SSAIB security systems. Your insurer or broker must confirm the security requirements and terms of your individual policy; product documentation is available to support that discussion.
Integrates with Existing Alarms
Works alongside your monitoring station or existing alarm panel — no new infrastructure required.
Safe for Gemstones & Metals
Non-toxic, non-corrosive fog fluid is safe for all jewellery materials, display cases, and stock — no residue.
UK-Wide Installation Network
Approved partners cover the whole UK for installation and servicing, including South East, East-Midlands, and Scotland.
Case Study
European luxury jewellery production
This published case study describes a deployment at a European jewellery production facility, with smaller protection zones around workstations, transfer routes and the vault approach.
From the published Density case study.
Read Full Case StudyLatest Sector News
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Security fog installation costs vary depending on site size and the number of units required - use our quote tool for a site-specific estimate
Frequently Asked Questions
Yes. A practised smash-and-grab team typically takes 30–90 seconds from first entry to exit. Density security fog starts discharging in under one second after a confirmed trigger. The time needed to obscure a zone depends on the model, protected volume, layout and ventilation, and is confirmed during the site survey.
In zero visibility, the raid cannot continue. Analysis of premises protected by active fogging systems shows that in the vast majority of cases, intruders abandon the attempt immediately on deployment.
No. Density uses a non-toxic, non-corrosive, water-based fog fluid that is completely safe for all jewellery materials — including gold, silver, platinum, gemstones, diamonds, pearls, and all common alloys. It is equally safe for display cases, glass, LED lighting, and electronic point-of-sale equipment.
The fluid dissipates naturally within 30 to 60 minutes without leaving any residue, and does not require specialist clean-up. It is CE-certified and tested to applicable EN standards.
Yes. Active security approved for use with NSI and SSAIB systems is explicitly required or strongly preferred by most specialist jewellery insurance policies for high-value stock cover. Without NSI or SSAIB - approved active security, many policies carry exclusions for smash-and-grab losses or require a higher excess.
Density is approved to be used in conjunction with NSI and SSAIB security systems.
Yes. Density fog generators connect via a standard relay output on your alarm panel, working alongside the vast majority of alarm systems used in UK retail and jewellery environments. No new infrastructure is required — a Density-approved engineer will connect the unit during installation, typically completed within a single day.
The system can be triggered automatically on confirmed alarm activation, via your ARC monitoring station for remote deployment, or via a hardwired panic button for use during manned raids.
Yes. Density systems can be connected to a hardwired panic button — allowing staff to trigger fog deployment manually during a manned or armed raid. This is a specific consideration for jewellers, where raids sometimes occur during trading hours.
The panic trigger is configured separately from the alarm-activated trigger, and can be installed at a discreet location — typically behind the counter or in a back office — allowing activation without alerting the raider. Density will advise on the most appropriate panic trigger configuration for your specific premises layout during the site survey.
Cost depends on three main factors: the Density product specified (UNIK for individual display zones, Basic for standard retail floors, C-Line for larger showrooms), the number of zones or areas to protect, and the complexity of integration with your existing alarm system.
A free site survey — provided at no charge and with no obligation — is the most accurate way to produce a costed proposal for your specific premises.