Security fog systems that stop a break-in in 15 seconds
Dense, harmless fog fills your premises in seconds — dropping visibility to near zero and ending a break-in before anything is taken. Designed, manufactured and supported in the UK for over 30 years
what is security fog?
The moment an intruder breaks in, our Sentinel fog generators fill the space with dense, harmless white fog. Deployment takes 15 to 20 seconds. Visibility drops to near zero. The intruder — who came in expecting a fast, clean theft — cannot see the stock, the safe, the display cabinet, or the way out. In the overwhelming majority of cases, they leave with nothing.
That is the distinction that matters. CCTV records a crime. An alarm announces one. Security fog prevents one — which is why fog systems are classified as loss prevention devices, and why they are recommended as an anti-burglary measure for premises holding high-value or high-turnover stock. The fog is non-toxic, food safe and residue-free — independently verified by the Atomic Energy Authority and AFM-tested by Molecular Profile Services. It leaves nothing behind on stock, equipment or fittings, and normal trading resumes as soon as the space has ventilated.
Smoke Screen systems protect retail floors, warehouses, offices, cash centres, ATMs and homes — anywhere the gap between an alarm sounding and a response arriving is long enough for someone to walk out with your property. In the UK that gap is the whole problem: most break-ins are over in under 90 seconds. Our systems act inside it.
PROVEN ALONGSIDE POLICE AND THE WIDER SECURITY SECTOR
We work in the open with the people tackling crime, not around them. We exhibit at police-backed Secured by Design events — most recently a Scottish Police event in August 2026, where we demonstrated live to around 100 officers, many of whom had never seen security fog before. We are founding participants in Fight Back Against Retail Crime, the award-winning collaboration between police, retailers and security professionals. And we partner with criminologists at the University of Lincoln to measure what our systems actually do to crime — not just on protected sites, but in the surrounding community.
CERTIFIED, TESTED, AND BUILT TO STANDARD
EN50131:8 is the European standard for security fog devices, and our Sentinel range is built to meet it. We have held ISO 9001 since 2018 and ISO 14001 alongside it, both re-certified in December 2024. In 2026 our V2 IP Card achieved CySPAG accreditation under the BSIA’s cyber security scheme — because a connected security device that is not cyber-secure is a liability, not a safeguard. We have been actively engaged in developing security regulation for over a decade.
Martyn's Law: get ahead of spring 2027
The Terrorism (Protection of Premises) Act 2025 — Martyn’s Law — received Royal Assent in April 2025, and its duties are expected to be enforced from spring 2027. If your premises can hold 200 people or more, you are in scope. Statutory guidance published in April 2026 sets out what standard and enhanced tier premises must have in place. Martyn’s Law is a duty about procedures and protecting people — it is not a product specification, and no single device makes a premises compliant. But for enhanced tier sites weighing up public protection measures, and for anyone building a lockdown or delay capability, security fog is a conversation worth having early. We are already having it — at BSIA level, with a working group meeting scheduled for September 2026. Talk to us before your deadline, not after it.
See it before you buy it
Reading about security fog does not do it justice. Watching a room disappear in 15 seconds does. Our fog van brings a live, working demonstration to your site or event — and with the Xenon Flash strobe add-on lighting the fog particles, the effect is closer to a wall than a mist. Book a demonstration and judge it for yourself, on your own premises.
“After installing Smoke Screens in over 200 stores, burglary and break-ins dropped by 70%.”
Boots Plc
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“When you are having 40 attacks on your ATMs each month you need an effective solution. Smoke Screen is that solution.”
Itau Unibanco
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“20 Smoke Screen units have been installed. Arla foods has not suffered a single loss at this site since the installation.”
Arla Foods
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“Since installation, there has never been another break-in, attempted or otherwise.”
Expansys
Read NextOne range, from a kiosk to a distribution centre
The Sentinel range runs from the compact SC20 and battery-powered Go — built for small retail units and sites with no mains power — up to the S150, our most powerful generator. Multiple units fire together to protect large open spans, and the Xenon Flash strobe and S3B Sound Barrier add light and sound to the fog for a stronger deterrent still. Every Sentinel is Ajax Ready, with two pre-installed wireless relays, and integrates with standard intruder alarm systems.
For estates, Sentience — our cloud monitoring platform — reports on every generator’s readiness continuously. One major UK retailer moved activation success from 56% to 98% after adopting it, which is the difference between owning fog systems and knowing they will fire.
Where Security fog earns its place
It’s time for the security industry to evolve
Tackling the causes of crime is a long-term project that we’re invested in on every level. One day, our goal is for us and other security businesses to become obsolete. Until then, we’ll continue to deliver innovative solutions to keep you safe.
Find out what security fog would do for your premises
Every premises is different — floor area, alarm system, stock profile, insurance position. We will look at yours, recommend what fits, and tell you if fog is not the right answer. No pressure, no upsell. Bring the fog van and see it working before you commit to anything.
If Martyn’s Law applies to your premises, the duties are expected to be enforced from spring 2027. Earlier conversations are cheaper ones.