Manned Guarding vs CCTV Towers For Construction Sites

Manned guarding and CCTV towers are often compared on price alone, but they do different jobs at different times, so the wrong choice leaves you paying for cover that doesn’t do what your construction site needs.

As part of our ongoing exploration into measures designed for the construction industry, we’re weighing up manned guarding and CCTV towers for construction site security and where they could feature on your site. Knowing which is right can be a challenge, so we’ll take it phase by phase.

Manned Guarding vs CCTV Towers For Construction Sites

You’ll want a security guard where a person has to act quickly (your gate, deliveries, plant, inductions) and CCTV towers where you need cover when no one’s there. For most construction sites, we’d advise using both, in a mix that changes as the build moves through its phases.

What Is Manned Guarding & Where Would I Use It On Site?

Manned guarding is the overarching term given to any professional security presence deployed to protect a premises, site or other project. This can be either manned or static guarding, as well as more specialist services like canine handling for sites that are at particular risk (major rural builds or energy infrastructure, for example).

All contracted personnel deployed as part of a manned guarding service will need the relevant licence from the Security Industry Authority (SIA) for the work they do (check any licence on the SIA register), but a licence alone doesn’t prove construction competence, so ask what site-specific training your officers have had.

Gatehouses, Access Points & Other High-Value Areas

In our experience, manned guarding excels in areas where there’s a pressing need for a visible, responsive presence. That includes:

• Gatehouses and entranceways for large-scale construction projects, especially sites with multiple access points
• Plant, equipment and machinery storage areas, where valuable equipment is concentrated
• Very high-value projects (like critical energy infrastructure)
• Civil projects, or those at risk of protest action (like the HS2 project, or the SEALR in Buckinghamshire)
• Completed but unoccupied areas (such as “phases” of new build estates, which include the same risks as vacant properties until handover)

They might also need that manned support as an active member of the team... The construction of a new supermarket with an attached warehouse and home shopping depot, for example, might require an officer who’s there to both secure the site and direct large loads using specialised Banksman training.

Equally, if you’re operating a small construction site with a limited budget, a multi-skilled security officer can cover locking and unlocking the site compound each morning and evening, as well as emergency first aid if they hold the qualification.

At Lloyds Transport’s Tamworth distribution centre, our officers log every delivery and check all site traffic. That’s the same discipline a busy construction gate needs.

What Is A Mobile CCTV Tower & Where Would I Use It On My Site?

A mobile CCTV tower (also called a mobile CCTV unit) is a self-contained, weather-resistant facility that continuously provides a live feed of all activity captured by its CCTV cameras. They’ll usually be fitted with either 2 (for 180° coverage) or 4 (for 360° coverage) static cameras, sometimes with a PTZ camera, and be entirely autonomous in their operation, requiring little input once they’re set up and operational. Towers can reach up to 7 metres high.

Most mobile CCTV towers will run on solar power (using an in-built battery that charges through large solar panels, which keeps the tower running in low light), but can be equipped with a “plug-in” power source if your site has existing power or substantial permanent infrastructure already in place. In our experience, however, most sites will opt for the solar option as this is exceptionally reliable even in the typically unpredictable British weather.

These towers connect wirelessly via a worldwide SIM card (necessary to avoid any network outages that could impact coverage) to a 24/7 monitoring centre. From there, the cameras are monitored by trained, SIA-licensed operatives who’ve received training to identify and deploy the appropriate response to any signs of danger or suspicious activity. Because your site is monitored remotely, nobody has to stand on it and the monitoring team get remote access to the live feed.

With the advent of AI integration in surveillance and monitoring technology, modern CCTV towers now offer the capacity to filter out false activations and false alarms (such as sensors triggered by animals) and identify health and safety breaches (like missing PPE).

Given their autonomy and the additional support that modern AI enhancements offer, we’re seeing a substantial increase in the use cases of rapid deployment CCTV towers on construction sites, from remote areas with limited infrastructure to perimeter protection on larger builds and storage areas where materials are kept.

In these scenarios, CCTV towers are both a highly visible deterrent and a powerful tool in the fight against construction site theft, given their ability to provide real evidence for police investigations if tools, equipment or materials are stolen.

Rapid Deployment CCTV Towers For Temporary Sites

Because mobile CCTV towers don’t need any cabling, rapid deployment CCTV towers suit temporary sites. Portable CCTV systems can be installed around a construction site, usually within 24 to 48 hours of request, which means they can be easily moved around as your project progresses.

Where CCTV Towers Fall Short & Why A Site Survey Matters

Not all CCTV towers perform equally and none can physically stop anyone or catch every event.

The key features to check are line of sight, which changes as scaffolding goes up, image quality in poor weather and low light, and the power supply and mobile signal.

That’s why a site survey (or site assessment) comes first because it can stress test a CCTV network in a real location to see how it holds up.

What Happens After A Detection?

We’d agree the steps with you before a tower goes up:

1.     A camera flags suspicious activity in a monitored zone.

2.     An operator at our National Operations Centre checks the live images against your site instructions to rule out false activations.

3.     If it’s genuine, the operator follows your agreed plan. Whether that’s alerting an officer or keyholder to respond, or calling the emergency services.

4.     Someone attends quickly depending on who’s contracted and how far away they are (our average response time is 30 minutes).

Key Comparisons Between Manned Guarding & CCTV Towers

Both options protect your site, but in different ways. Here’s how to find the right solution for yours.

Which Is Better For Deterring Intruders & Providing Rapid Response?

A security guard’s physical presence is a strong deterrent, while a mobile CCTV tower is a visible deterrent backed by live monitoring. The College of Policing’s crime reduction toolkit links CCTV with modest crime reductions, mostly where it’s actively monitored and combined with other security measures.

A security guard on site gives you an immediate response and can verify an alarm in person. A tower’s CCTV cameras give continuous coverage, but a person still has to act on what they see.

Which Is The Cheaper Option For Your Site Size?

Cost and savings is a difficult one to judge, and not something we’d recommend focusing on because just looking at price can lumber you with a security system that doesn’t do what you need it to.

A security guard is charged by the hour, while mobile CCTV towers are charged by the hire period, so the cost doesn’t change with the clock. A 24-hour post is 168 hours a week. If your site is attended Monday to Friday, 07:30 to 17:30, that’s 50, leaving 118 hours out of hours.

Site size matters too, as a larger site needs more towers or posts, whichever you choose. We’d advise comparing like for like.

Which Is Better For Health & Safety & CDM 2015 Compliance?

Let’s be clear, neither replaces a principal contractor’s duties on construction sites under CDM 2015, which require steps “to prevent access by unauthorised persons” without naming guards or cameras.

Which Is Better For A Site With No Power Or Welfare?

A solar-powered CCTV tower doesn’t need mains power or welfare on day one, so your early groundworks may suit a tower first. A security guard needs shelter and welfare, your duty of care to them includes the risk of being physically threatened.

Can I Have Both Manned Guarding & CCTV Towers On My Site?

Yes, and the majority of security providers would advise having a blend of the two so all aspects of site security are covered. This minimises gaps in coverage and scales to suit projects of all sizes.

Splitting The Hours Between A Security Guard & CCTV Towers

During working hours, you’ll want security officers on your gate for access control, deliveries and HGV movements. Out of hours, remote monitoring from the towers acts as the first line of defence, with mobile patrols checking anywhere the cameras can’t see.

It’s the same principle at Dennis Eagle’s Blackpool facility, though that isn’t one of our construction sites. Our National Operations Centre provides continuous monitoring, 24/7, of the site’s CCTV, backed by keyholding, alarm response and locking and unlocking.

Phase By Phase: Changing The Mix As Your Construction Project Progresses

What we’ve found with many of our clients in the construction sector (like a recent demolition project on the outskirts of Preston) is that they’ll usually begin with the technology before expanding to include manned guarding as part of their security package.

Alternatively, you might opt to start with manned guarding while heavy machinery or plant equipment is on site for extended periods before moving to round-the-clock monitoring as the project progresses to a phase where there’s a lower risk of theft, or where wider infrastructure supports a more expansive setup (such as permanent CCTV installations).

Re-survey whenever your temporary fencing, access routes or storage areas move, reducing security only after you’ve reassessed. Physical perimeter security remains fundamental on construction sites, so fencing and gates come first.

Choosing Between Manned Guarding & CCTV Towers: Five Questions To Ask

Put these to your site manager and project managers before you decide:

1.     When is the site unattended?

2.     What would be taken first, and from where?

3.     Who must be physically present?

4.     Is there power and welfare?

5.     How long is the project, and what’s your risk profile in each phase?

Once you’ve answered them, our guide to writing a construction site security plan will help you find the right security solution.

Adaptive, Professional Construction Site Security With ProFM Group

ProFM Group are an SIA Approved Contractor with NSI Gold accreditation for CCTV monitoring. We pride ourselves on providing purpose-built, intelligent construction site security.

We’re most known for our manned security services, having provided both static security personnel and mobile patrols for a range of different projects, from city-centre renovations in urban Manchester to rural energy infrastructure.

Alongside that, we’ve also built a strong reputation for our technology, and our solar-powered CCTV towers offer autonomous reliable protection. Installed by our trained technicians and monitored around the clock by the SIA-licensed operatives in our National Operations Centre (NOC), we deliver a package that’s designed with the modern construction industry in mind.

We take the time to understand your pressure points, what makes your site unique, and how we can combine  both manned guarding and CCTV towers (or either of the two in isolation) to exceed the standard requirements set out for your project. We provide this to UK construction sites on a range of budgets, and our teams cover sites across the UK.

Book A Free Site Survey

That all starts with an enquiry with our in-house security experts, who can arrange a free site survey to test coverage and access points before you commit.

Get in touch online to chat with our team and find out how we’re able to deliver the right security solution designed specifically for your project and budget. Or call us on 0808 196 0378.