The UK construction industry loses more than a billion pounds a year to theft, and the trend is getting worse, not better. Every contractor with plant, tools or materials on an unattended site overnight is a target, and the figures for 2025 and 2026 show organised theft becoming more frequent and better coordinated.
We have pulled together the latest published data on construction site theft in the UK, what is actually being taken, and what it means for how sites should be secured going into 2026.
The headline figures
The construction industry’s annual losses to theft now exceed £1 billion, once machinery, materials and the knock-on cost of project downtime are accounted for. Over 11,000 plant and equipment thefts are formally reported to police each year, but industry estimates put the true figure at two to three times higher, since many smaller contractors and subcontractors do not report thefts at all, often to avoid the administrative cost of an insurance claim or the risk of a premium increase.
Tool theft specifically has worsened sharply. An estimated 30,848 tool thefts were reported over 2025, a 16 per cent rise year on year, which works out to roughly one reported theft every 17 minutes somewhere in the UK. The average tradesperson affected loses tools worth £4,470 in a single incident, and fewer than one in four stolen items are ever recovered.
What is actually being stolen
The pattern of what thieves target has become fairly consistent across industry reporting. Small, high-value power tools account for around half of reported thefts, since drills, saws, angle grinders and batteries are easy to conceal, quick to remove, and simple to sell on regardless of provenance.
Copper is the second most common target, driven by its scrap value and how easily it can be stripped from a site and sold. Larger plant, including mini excavators, telehandlers, dumpers and rollers, is targeted less often by volume of incidents but accounts for a disproportionate share of the financial loss, since a single stolen excavator can be worth tens of thousands of pounds.
| What’s targeted | Why it’s targeted |
|---|---|
| Power tools (drills, grinders, saws, batteries) | Easy to conceal, fast to remove, high resale demand regardless of provenance |
| Copper cable and fittings | High scrap value, straightforward to strip and transport |
| Plant (excavators, telehandlers, dumpers) | Lower incident volume, but the highest value loss per theft |
| Fuel | Consistent demand and difficult to trace once removed from site |
Why underreporting hides the real scale of the problem
Industry sources are consistent on one point: the official reported figures understate the real scale of construction theft. Smaller subcontractors in particular are more likely to absorb a loss quietly than report it, either because the value falls under their insurance excess, because they fear a claim will push up their premium, or simply because the administrative burden of reporting is not worth it for a stolen drill or saw. That underreporting means the true annual cost to the industry is very likely well above the £1 billion headline figure, not below it.
What this means for site security
The data points to a fairly clear conclusion: sites relying on a single layer of protection, a locked container or a basic camera system, are the ones absorbing the bulk of these losses. The sites that fare better combine several measures rather than one:
- Manned or mobile patrol presence during the hours a site is unoccupied, since a visible human deterrent remains one of the strongest factors in whether an opportunist thief attempts a site at all.
- CCTV with genuine monitoring, not just recording, so an incident in progress can trigger a response rather than only providing evidence after the fact.
- Secure, marked and tracked tool and plant storage, since marked equipment is harder to sell on and easier to recover if it is stolen.
- A fire watch or dog patrol on larger or higher-value sites, where the ground to cover exceeds what a single static guard can realistically monitor.
How Anubis approaches construction site security
We have provided site security for major infrastructure projects, including a 13-month, 24-hour contract with BAM Nuttall and SSE at a switching station in Wick, and our construction site security service is built around the same principle the data points to: no single measure is enough on its own. That typically means combining manned or mobile patrol cover, CCTV, and where a site’s size or value warrants it, a security dog patrol covering ground that a static guard alone cannot.
The right combination depends on the site. A small residential build with a locked compound has a very different risk profile from a large infrastructure site running plant worth millions overnight, and a security assessment at the start of a contract should reflect that rather than applying the same package to every job.
Frequently asked questions
How much does construction theft cost the UK industry each year?
Published industry estimates put the direct cost above £1 billion annually, and this is widely considered an underestimate given how much theft, particularly of tools, goes unreported.
What is stolen most often from construction sites?
Power tools account for roughly half of reported thefts by volume, followed by copper cable and fittings. Plant machinery is stolen less frequently but accounts for a larger share of the total financial loss per incident.
Why do so few stolen tools get recovered?
Fewer than one in four stolen tools are recovered, largely because small power tools are easy to resell quickly and rarely carry visible, checked identification marks.
Does site security actually reduce theft risk?
A visible security presence, whether manned guarding, mobile patrol, or a dog patrol, is consistently cited across industry sources as one of the strongest deterrents against opportunist and organised theft alike, particularly when combined with monitored CCTV rather than recording-only cameras.
Is tool marking worth doing given theft rates?
Yes. Marked tools are harder to sell on and more likely to be identified and returned if recovered by police, and many insurers now expect some form of asset marking as a condition of cover for higher-value equipment.
For a security review of your site, see our construction site security service, or read our earlier guide on construction site security essential measures. If your site’s footprint needs a mobile deterrent, our security dog patrols page covers how that works in practice once published. To arrange a free site security assessment, call 0800 121 6576 or contact us.
