About the company

British-built security,
since 2014.

Density security fog is provided by the team at Dnetuk Ltd in Derby. We protect UK commercial premises with approved, installed-in-a-day fog systems — and a team that answers the phone.

Why we exist

Most security tells you a crime happened. We stop it while it’s happening.

The team behind Density started because the gap was obvious to anyone who’d stood in a stripped-out warehouse the morning after. Alarms had sounded. Cameras had recorded. None of it stopped the theft. We set out to give UK businesses the one layer that actually intervenes — fast, approved, and affordable enough to fit the premises that need it most. With over 2 decades of experience within the security sector the team knew the challenges UK, and global, businesses faced, and more importantly, we knew how to fix them!

2014
Operating from Derby, UK
20+
Years protecting UK premises
UK-wide
Accredited installer network
NSI · SSAIB
Approved for use with NSI & SSAIB systems
Photo coming soon
Our story

From one frustrating gap to a national network.

The team from Dnetuk have been together since 2014 with a single conviction: detection and recording were never going to be enough on their own. A determined intruder plans around response time — so the only honest answer is to remove the thing they came for from view, instantly.

Density is that answer. A range of security fog generators that fire straight off your existing alarm and fill the protected space in seconds. What began protecting a handful of local businesses now covers warehouses, retailers, jewellers and industrial sites the length of the country – with over 2000 installation in the UK, and many thousands more across Europe and the US – Density security fog is proving to be a global leader in trusted active security defence.

We’re still independent, still based in Derby, and still run by the people who spec the systems.

 

Three things we don’t compromise on.

We’re an engineering company first. These are the principles every survey, quote and install is held to.
01

Honest advice

We size the system to the space, not the invoice. If a smaller unit does the job, that’s what we’ll quote — and if fog isn’t right for you, we’ll say so.

02

Proper approvals

Every install is approved for use with NSI and SSAIB systems and ships with a full documentation pack your insurer and fire officer can review.

03

People who answer

You deal with the team that surveys and installs your system. One number, real engineers, no call-centre script between you and an answer.

Approvals & standards

Documented to the standard your insurer expects.

Density systems are approved for use alongside NSI and SSAIB security systems. Every install is documented end to end, so when your broker or underwriter asks what’s protecting the premises, you have the paperwork to prove it.

NSI
Approved for use with National Security Inspectorate systems
SSAIB
Approved for use with SSAIB-certified intruder alarm installs
Full pack
Documentation supplied with every commissioned system
Find us

Talk to the team.

Based in Derby, working UK-wide. Call, email, or book a free on-site survey — whatever’s easiest.
Dnetuk Ltd

Density Security Fog

 
Address
Marble Hall, 80 Nightingale Road,
Derby DE24 8BF, United Kingdom
 
 
Hours
Mon–Fri, 8:00–18:00
Map
Work with us

Let’s protect your premises.

Get an indicative price in under two minutes, or book a free on-site survey with the team that will actually install your system.