One of the most common questions we’re asked by businesses across Belfast and Northern Ireland is simple: should we have a security guard on site permanently, or would mobile patrols cover us just as well? The honest answer is that it depends on your site, your risk profile, and your budget, and for many businesses, the right answer is a mix of both.

Quick answer

Static security guarding puts a licensed guard permanently on your premises, providing constant visible presence, access control, and immediate response. Mobile patrols send a marked patrol vehicle to your site at scheduled or randomised intervals throughout the day or night, checking the premises, responding to alarms, and moving on to the next site. Static guarding suits sites with continuous footfall or high-value access points; mobile patrols suit sites that need regular checks but not a 24-hour physical presence, and they cost significantly less per site.

What is static security guarding?

A static, or manned, guard is stationed at a single location for the duration of their shift. This is the right fit when a site needs:

• Continuous access control, checking IDs, signing in visitors, managing deliveries
• A visible deterrent during opening hours or overnight
• Someone able to respond instantly to an incident, alarm, or emergency on site
• Customer-facing duties, such as concierge or front-of-house security

Retail units, corporate offices, construction sites with active work in progress, and venues during events typically fall into this category. You can read more about our security guarding and retail security services.

What are mobile patrols?

A mobile patrol is a marked vehicle, crewed by SIA-licensed officers, that visits your site on a scheduled or randomised route. A typical visit involves:

• A full walk-around of the premises, checking doors, windows, gates, and fencing
• Verifying alarm systems and CCTV are functioning
• Logging any issues, damage, or suspicious activity
• Responding to triggered alarms as part of a key holding & alarm response service

Because one patrol team can cover multiple sites in a single shift, this is a far more cost-effective way to secure premises that don’t need someone stationed there around the clock, vacant commercial units, warehouses and yards outside working hours, construction sites overnight, or business parks after close of business.

Comparing the two

	Static Guarding	Mobile Patrols
Presence	Continuous, on site	Scheduled or randomised visits
Best for	High footfall, access control, active sites	Vacant or low-activity sites, out-of-hours cover
Response time	Immediate, already on site	Minutes, depending on route and location
Cost per site	Higher, dedicated staffing	Lower, shared across a patrol route
Deterrent style	Constant visible presence	Unpredictable visits deter opportunistic activity
Typical use case	Offices, retail, events, construction (live)	Warehouses, yards, business parks, vacant units, out-of-hours cover

Why randomised patrol timing matters

One detail worth knowing: patrols that visit at exactly the same time every day are far easier for anyone watching the site to predict. A well-run mobile patrol service varies visit times and route order, so the pattern isn’t obvious to anyone observing from outside. This is one of the most effective, and most overlooked, ways to increase the deterrent value of a patrol contract without increasing cost.

Can you combine both?

Yes, and for many of our Northern Ireland clients, this is exactly what we recommend. A common setup looks like:

• Static guarding during trading hours, when footfall, deliveries, and access control matter most
• Mobile patrols overnight and at weekends, when the site is empty but still needs regular checks and alarm response

This layered approach keeps costs proportionate to actual risk, rather than paying for a permanent guard around the clock when the highest-risk hours are actually overnight.

Questions to ask before you decide

1. Is your site occupied or accessible to the public during the hours you need coverage? If yes, static guarding is usually the better fit.
2. What’s the response time if an alarm is triggered when no one is on site? If that gap is a concern, mobile patrols with key holding cover it.
3. How many sites do you need covered? Multiple smaller sites are usually more cost-effective with a shared patrol route than individual static guards at each.
4. What’s driving the requirement, insurance conditions, past incidents, high-value stock, or general deterrence? This often points clearly to one option or a blended approach.

How Assure & Secure can help

We provide both static security guarding and mobile patrol services across Belfast and Northern Ireland, along with key holding and alarm response and CCTV & remote monitoring to bridge the gaps between visits. If you’re not sure which setup suits your site, we’re happy to carry out a no-obligation site assessment and recommend the most cost-effective option for your risk level.

Frequently asked questions

Is a mobile patrol as effective as having a guard on site?

For sites that don’t have continuous activity, vacant units, yards, business parks overnight,  a well-timed mobile patrol with randomised visits can be very effective and considerably cheaper. For sites with continuous footfall or access control needs, static guarding is more appropriate.

How often do mobile patrols visit a site?

This depends on the contract and the site’s risk level, ranging from a single nightly visit to multiple checks per shift. Patrol frequency and timing should be agreed based on your specific requirements.

What happens if a mobile patrol finds a problem, like a triggered alarm or a break-in?

The patrol team logs the issue, secures the site where possible, and follows the agreed escalation procedure,  which may include contacting you, the police, or another key holder, depending on the arrangement in place.

Can I switch between static guarding and mobile patrols seasonally?

Yes. Many businesses, particularly retail and construction sites, adjust their security cover seasonally, for example, increasing static presence during busy trading periods and relying on patrols during quieter months.