The Security Industry Authority (SIA) regulates private security in the United Kingdom. If your company provides contract security services, your operatives must hold valid SIA licences for the specific activity they perform — security guarding, door supervision, close protection, CCTV operation, key holding, or cash and valuables in transit.
Keeping track of those licences across a workforce of 50, 100, or 500 guards is one of the most common compliance challenges in the industry. This guide explains what compliance requires and how to manage it without it becoming a part-time job.
What the Law Requires
Under the Private Security Industry Act 2001, it is a criminal offence to:
- Work as a security operative without a valid SIA licence in a licensable role
- Knowingly (or where you ought to know) deploy an unlicensed person in a licensable role
The penalties are significant: unlimited fines, up to five years’ imprisonment for the most serious cases, and — critically for security businesses — potential loss of your company’s ability to operate. The SIA takes unlicensed working seriously, and enforcement action is not limited to the individual guard.
Understanding the SIA Public Register
The SIA maintains a live Public Register of all current licence holders. Anyone can search it by name, date of birth, or licence number. Crucially, the register reflects licence status in real time: if a guard’s licence is suspended, revoked, or expires without renewal, the register reflects this immediately.
This creates a clear obligation for responsible security companies. A licence that was valid at the point of employment may not remain valid throughout the contract. Checking once at onboarding is not sufficient. Regular, documented checks against the Public Register are essential practice.
Licence Types: Understanding What Each Guard Needs
SIA licences are activity-specific. A guard holding a Security Guarding licence cannot legally perform door supervision duties without also holding a Door Supervision licence. The most common licence types you’ll need to monitor:
| Activity | Licence Required |
|---|---|
| Security guarding | Security Guarding |
| Door supervision | Door Supervision |
| CCTV (public space) | Public Space Surveillance (CCTV) |
| Close protection | Close Protection |
| Key holding | Key Holding |
| Cash in transit | Cash and Valuables in Transit |
Guards often hold multiple licence types. When assigning a guard to a role, verify they hold the correct licence for that specific activity — not just that they hold any SIA licence.
The Four Most Common Compliance Failures
1. Checking Licences Only at Onboarding
A guard’s licence was valid when they joined. It expired eight months later. Nobody noticed because the company’s process was to check once at hiring. This is the most frequent compliance failure — and the most avoidable.
2. Not Verifying the Correct Licence Type
A guard with a Security Guarding licence is deployed on a door supervision contract. Both licence cards look similar to a non-specialist. The guard is technically unlicensed for the role they’re performing.
3. Relying on Guards to Self-Report
Expecting guards to flag their own upcoming expiry to management is an unreliable system. Guards receive renewal reminders from the SIA, but those reminders go to the guard — not their employer. A system that depends on self-reporting will eventually fail.
4. Informal or Undocumented Records
Licence numbers recorded in a manager’s notebook, or a spreadsheet that lives on one person’s computer, are not auditable compliance records. If those records cannot be produced during an ACS assessment or an SIA inspection, they may as well not exist.
Building a Systematic Compliance Process
Always Verify Against the Public Register — Not Just the Card
An SIA licence card can be presented even after a licence is revoked or subject to conditions. The card itself proves only what was true when it was issued. Before deploying any guard in a licensable role, verify their current status on the SIA Public Register.
Build a Compliance Calendar with Advance Notice
Know when every guard’s licence expires. Build in a review window of at least 90 days before expiry. This gives enough time for a guard to apply for renewal, complete any required refresher training, and wait for the SIA’s current processing time — which can run from six to twelve weeks for most licence types during busy periods.
Automate at Scale
Manual Public Register checks are feasible with a small team. With 50 or more guards, they become a significant weekly workload. Guard management platforms like TacDesk integrate SIA Public Register monitoring directly, surfacing upcoming expiries and flagging status changes automatically — without a manager having to check each guard individually.
Document Every Check
When the SIA or an ACS assessor asks how you manage licence compliance, you need evidence — not assertions. That means timestamped records showing that checks were conducted, what status was found, and what action was taken when an issue arose. Documentation is not an optional extra; it’s the difference between demonstrable compliance and a verbal claim.
When a Guard’s Licence Lapses
If a guard’s licence expires and has not been renewed, they cannot legally work in a licensable role. Your options are straightforward:
- Temporarily reassign to a non-licensable role, if one exists and is operationally viable
- Grant leave while the renewal is processed (paid or unpaid depending on contract terms)
- End the engagement if renewal is not forthcoming within a reasonable timeframe
In no circumstances should a guard continue working in a licensable role without a valid licence. The risk to your business — and to the guard personally — is not proportionate to the short-term operational convenience.
SIA Compliance as a Competitive Advantage
Companies that manage SIA compliance systematically aren’t just staying on the right side of the law. They’re also building trust with clients — particularly public-sector clients who conduct their own supplier due diligence. Many local authority and NHS procurement frameworks specifically require evidence of licence management processes. Companies that can demonstrate systematic compliance stand apart from those that can only assert it.
If your current process for SIA compliance feels uncomfortable to describe to a client or an assessor, that discomfort is telling you something important.
To learn how TacDesk handles SIA licence monitoring for UK security companies, visit tacdesk.co.uk.