Contour Secure - Blog

Securing Enclosures in the Real World: Addressing the Growing Risks with Tamper-resistant Solutions

Written by Josh Simpson | Aug 5, 2025 6:15:00 AM

Across the UK, infrastructure enclosures (from feeder pillars to roadside cabinets and telecom cabinets) are under increasing threat. Whether used for power distribution, traffic signal management, EV charging, or communications, these enclosures are often installed in publicly accessible areas, making them vulnerable to vandalism, forced entry, and theft.

This problem isn’t new, but it’s escalating. And it’s costing companies and public services time, money, and operational reliability.

 

The Problem: Vandalism is on the Rise

The expansion of London's ULEZ (Ultra Low Emission Zone) has brought a surge in attacks on infrastructure. Between April and October 2023, Metropolitan Police recorded 987 offences involving ULEZ cameras - 220 stolen and 767 damaged. Each camera unit is estimated at around £10,000, resulting in an estimated £9.8 million in replacement and repair costs over just six months.

Moreover, these assaults often don’t stop at the cameras themselves. Adjacent enclosures such as feeder pillars, roadside cabinets, and telecom housings, frequently sustain collateral damage. Whether the aim is to cut power to disable the system or to directly compromise control infrastructure, weapons as simple as screwdrivers or crowbars are being used with alarming ease against weak locking systems.

These attacks have serious consequences:

  • Complete equipment failure
  • High-value replacements of entire cabinets or enclosures
  • Interrupted services ranging from traffic signals and EV charging to CCTV and communications
  • A surge in maintenance demands and emergency callouts

These figures (nearly 1,000 incidents and £10 million in costs) underscore the urgent need for stronger, more resilient security solutions to protect our critical infrastructure.

The Weakest Link: Standard Locks Can’t Keep Up

Most enclosures come fitted with standard cam locks, many of which can be forced open using little more than a screwdriver or makeshift tool. The issue lies not only in the strength of the materials but in the design of the lock itself - many feature flat edges, accessible keyways, and little resistance to torque or impact.

For companies managing large estates of infrastructure enclosures, this leaves hundreds (or thousands) of access points open to risk.

The Solution: Contour Secure’s Tamper-Resistant Cam Lock

Contour Secure has developed a tamper-resistant cam lock designed to address these exact challenges. It’s not a rebranded off-the-shelf product, it’s the result of understanding how enclosures are being compromised and designing a lock that responds to real-world risks.

Key features include:

  • A three-point contact system requiring specific alignment to engage
  • A compression ring that increases resistance to tampering and forced entry
  • A smooth, low-profile face with no leverage points, reducing the risk of tool-based attacks
  • No flat edges or standard insert shapes that are typically exploited with generic tools

Perhaps most importantly, it’s designed to retrofit into the same footprint as standard CAM locks. That means no drilling, no costly modifications, and minimal downtime during installation.

Making Security Practical

Replacing entire cabinets is expensive. Retrofitting a more robust lock is fast, simple, and cost-effective, especially when you consider:

  • Reduced callouts and emergency repairs
  • Fewer instances of vandalism-related failure
  • Extended lifespan of existing enclosures

Whether you’re managing feeder pillars, traffic systems, telecom infrastructure, or EV charging enclosures, investing in proper locking mechanisms can help prevent damage before it happens.

 

Final Thoughts

Security isn’t just about products, it’s about understanding the risks and responding to them proactively. The widespread damage seen across infrastructure during ULEZ expansion shows how real and urgent the threat is.

Contour Secure’s tamper-resistant cam lock is a practical response - engineered to withstand tampering, integrate easily, and help protect critical infrastructure from the ground up.

If you're facing challenges with vandalism, damaged enclosures, or rising maintenance costs, it might be time to reconsider the locking systems you're relying on.

At Contour Secure, we’re here to help you protect what matters. Our tamper-resistant cam locks are designed to retrofit easily, reduce risk, and provide a practical upgrade to your existing security approach.

📞 Call us: 01952 890158
📧 Email: sales@contoursecure.co.uk
🌐 Visit: contoursecure.co.uk

Or use our online form to enquire about a free sample or discuss your requirements with a member of the team.

Let’s work together to secure your infrastructure - properly.