Every security company operating in the UK has a legal obligation to verify that every guard on their books holds a valid SIA licence before they step foot on a site. But ask most security managers in 2026 how they do it, and the answer is still the same: a spreadsheet, a manual check every few months, and a prayer that nothing slips through.
That approach is putting your business at serious risk. Here’s why — and what to do instead.
What Is the SIA Public Register?
The SIA Public Register is the Security Industry Authority’s live database of every active licence holder in the UK. It is updated in real time when licences are issued, renewed, suspended, or revoked.
Any member of the public — or any client — can search the register to check whether a named individual holds a valid licence. That means your clients can check your guards at any time. The question is whether you are checking them first.
For companies seeking or maintaining ACS accreditation, continuous licence verification is no longer a nice-to-have — it’s an assessed requirement. In 2026, ACS assessors expect to see automated systems, not manual spreadsheets.
The Problem with Manual Checks in 2026
Most security companies verify licence numbers at the point of hire and then check again at renewal — typically once a year. Some do quarterly audits. Very few check continuously.
The gap between checks is where the risk lives. Licences can be suspended or revoked at any time — due to criminal convictions, SIA investigations, or administrative lapses. If a guard’s licence is revoked on a Monday and your next scheduled audit is in six weeks, you could have an unlicensed guard working your client sites for over a month before you know about it.
The consequences are severe:
- Criminal liability. Under the Private Security Industry Act 2001, deploying an unlicensed guard is a criminal offence — for the guard and potentially for the company. In 2026, SIA enforcement has intensified with more spot checks and compliance inspections.
- Contract termination. Most client contracts include a clause requiring all deployed personnel to hold valid SIA licences. A single incident can void the contract.
- ACS non-conformity. The Approved Contractor Scheme (ACS) assesses licence compliance as part of its scoring criteria. Manual processes with demonstrable gaps will cost you points — and potentially your accreditation.
- Reputational damage. The SIA publishes enforcement actions. Being named in an enforcement notice is not a position any security company wants to be in.
How Frequently Should You Be Checking?
The honest answer is: continuously. The SIA Public Register is a live system, and licence status can change at any moment. Quarterly checks are better than annual checks, but they still leave you exposed.
Best practice — and the standard that ACS assessors are increasingly expecting to see in 2026 — is automated, ongoing verification against the register. Not a manual check once a quarter, but a system that alerts you the moment a licence status changes.
This is part of the broader shift towards digital compliance management that modern guard management platforms provide. Staying SIA compliant in 2026 requires integrated tools, not fragmented spreadsheets.
What Automated Verification Looks Like in Practice
TacDesk includes automatic SIA Public Register sync as a core feature. Every licence number stored against a guard profile is checked against the live register on a regular basis. When a licence status changes — whether it expires, is suspended, or is revoked — the system flags it immediately.
Operations managers get an alert. The guard is automatically flagged as non-deployable in the scheduling system. No manual intervention required.
This matters for two reasons. First, it removes the operational risk of deploying unlicensed personnel. Second, it creates an auditable compliance trail — exactly the kind of evidence ACS assessors want to see when they ask how you manage licence compliance.
Making Compliance Evidence-Based
One thing that separates well-run security companies from the rest is the ability to prove compliance, not just claim it. When a client asks “how do you ensure all your guards are licensed?”, the answer shouldn’t be “we check regularly”. It should be a timestamped compliance report pulled from your system in thirty seconds.
Automated SIA register verification makes that possible. Every check is logged. Every status change is recorded. If you are ever audited — by the SIA, by an ACS assessor, or by a client conducting due diligence — you have a complete, documented history of your licence compliance activity.
Steps to Improve Your Licence Verification Process Today
If you are still relying on manual checks, here is a practical path to improvement:
- Audit your current process. How often are you checking? Who is responsible? Where are licence numbers stored? Identify the gaps before they become incidents.
- Centralise licence data. If licence numbers are scattered across spreadsheets, emails, and paper files, consolidate them into a single system. You cannot verify what you cannot find.
- Set a check frequency. If automated verification is not yet in place, commit to a monthly minimum as an interim measure — and document every check.
- Build alerts into your workflow. The point of licence verification is to take action when a status changes. Make sure your process includes clear escalation steps: who gets notified, what happens to the guard’s deployments, and how the record is updated.
- Move towards automation. Manual processes are inherently error-prone. As your company grows, the volume of licences to track grows with it. Automation is not a luxury for large companies — it is the only scalable approach.
The Bottom Line for 2026
SIA licence compliance is not optional, and “we try to check regularly” is not a compliance strategy. As the industry raises its standards — driven by ACS, by increasingly demanding clients, and by the SIA’s own enforcement activity — the companies that will thrive are those that can demonstrate compliance with evidence, not just intention.
Automated SIA Public Register verification is one of the most direct ways to close the gap between “we think we’re compliant” and “we can prove it”.
TacDesk includes automatic SIA register sync as standard — no add-ons, no extra fees. Book a demo to see how it works, or see pricing.