Use the SIA register of licence holders
The Security Industry Authority (SIA) publishes a free, public online register of licence holders. Search it with the 16-digit number printed on the licence card to see the holder’s name, licence sector (for example door supervision or security guarding), expiry date and status.
Check that the name matches the candidate’s verified identity, that the sector matches the role, and that the status is active — not suspended, revoked or expired.
Where it fits in BS7858 screening
For licensable roles, confirming the SIA licence (or evidence of an application) is part of limited screening, before someone starts under conditional employment. See limited screening explained.
Keep checking after hire
A licence that was valid on day one can be suspended or expire later. Yezda checks licence numbers against the SIA register during screening, and Premium plans keep monitoring them so you find out before an auditor does. See BS7858 for security companies.