“Security guards” covers a lot of ground — from a receptionist-style concierge to an overnight patrol of an industrial estate. If you’re responsible for a site, it helps to understand how guarding is licensed and structured in the UK so you can buy the right cover. Here is a plain-English guide.
What SIA licensing means
In the UK, most manned guarding is regulated by the Security Industry Authority (SIA). Individual officers carrying out licensable security work must hold a valid SIA licence for their role, which requires approved training and background checks. When you engage a guarding provider, you should expect every deployed officer to be SIA-licensed for the work they do, and you’re entitled to confirm it.
Reputable providers also operate to recognised industry standards and carry appropriate insurance, vetting (typically to BS 7858) and clear assignment instructions for each site.
Static guards vs mobile patrols
The two most common models serve different needs:
- Static (on-site) guarding — an officer or team based at your premises for set hours. Best where you need a constant, visible presence: reception and access control, monitoring, visitor management, and a first response on site. Ideal for offices, sites with footfall, and premises that need presence through the night.
- Mobile patrols — officers who visit one or several sites on scheduled or random patrols, carrying out lock-ups, alarm response and checks. More cost-effective where a full-time presence isn’t justified, and well suited to multiple or lower-risk sites.
Many businesses combine the two — static cover at the main premises, mobile patrols for secondary sites or out-of-hours checks.
What guards actually do
- Access control, visitor and contractor management.
- Deterring and reporting crime, trespass and anti-social behaviour.
- Patrolling and monitoring CCTV and alarms.
- Key-holding, opening and locking up, and alarm response.
- First point of contact in emergencies and incident reporting.
- Supporting health, safety and fire procedures on site.
How to choose a guarding provider
- Licensing: confirm every deployed officer is SIA-licensed for their role.
- Vetting & training: ask about screening standards and ongoing training.
- Assignment instructions: a good provider documents exactly what happens on your site, and how incidents are escalated and reported.
- Supervision & cover: check how shifts are supervised and how absence is covered.
- Insurance & accreditation: confirm liability cover and recognised industry accreditation.
Frequently asked questions
Do all security guards need an SIA licence?
Officers carrying out licensable security work must hold a valid SIA licence for that role. Always confirm this with your provider.
Are mobile patrols cheaper than static guards?
Usually, yes — because one team covers several visits rather than staying on one site. The right choice depends on your risk level and how much presence you need.
Can one provider handle guarding and event security?
Yes. A full provider can supply day-to-day guarding plus event security for one-off occasions.
Need compliant, SIA-licensed cover? Crystal Facilities Management provides professional security guard services — static guarding and mobile patrols — for businesses across London and the UK. Request a free site survey.
Written & reviewed by Crystal Facilities Management — ISO 9001-certified facilities management and security services.
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