Do security guards need an SIA licence? What to check before you hire

Hiring security cover, whether that's a static guard for a site, a mobile patrol, or someone reviewing CCTV footage for a client, means understanding which roles actually require a licence under UK law and which don't, since getting this wrong can leave both the hiring business and the individual exposed. The Security Industry Authority (SIA) is the body responsible for licensing what the industry calls "front line" security roles, and the licence requirement applies specifically to work carried out under a contract for a client, rather than to security work in general.

The core licensable roles include door supervisors, security guards where the role involves guarding property against theft, damage or dishonest removal, and public space surveillance, or CCTV operators, where the work involves using CCTV equipment to identify or track a particular individual, or reviewing recorded footage to identify people or investigate their actions. Each of these requires the individual to hold a current SIA licence before they can legally carry out that specific work for a client under contract. To get one, an applicant must be 18 or over, have the right to work in the UK, and pass identity and criminality checks, alongside completing SIA-linked training delivered by an approved provider and mapped to a recognised awarding body's standards; once granted, a licence is valid for three years before it needs renewing.

A genuinely common point of confusion is the "in-house" exemption, and it's worth being precise about what it actually covers rather than assuming it applies broadly. In general terms, the exemption can apply where someone carrying out a licensable activity is employed directly by the company that uses their services, rather than being supplied by a separate security company under a contract for services — a shop's own staff monitoring in-store CCTV as part of their job, for instance, may not need individual CCTV operator licences in the way a contracted CCTV company's staff would. That said, exactly how the exemption applies varies by role and by the specifics of the working arrangement, and it should never simply be assumed to apply without checking current SIA guidance for the role in question, since getting this wrong is a compliance risk for the employer rather than a minor technicality.

For a customer or business hiring security services from an external company, the practical question isn't really about exemptions at all — it's simply confirming that anyone carrying out licensable work on your behalf actually holds a valid licence for that specific activity. The most reliable way to do this is the SIA's public Register of Licence Holders, which anyone can search using either the individual's 16-digit licence number or their personal details; the register shows the licence sector, its current status, and the holder's name, which is enough to confirm a licence is genuine and current rather than expired, revoked, or simply invented. A reputable security company should be entirely comfortable providing licence numbers for its staff on request, and any reluctance to do so is a legitimate reason for caution before signing a contract.

It's also worth understanding what falls outside SIA licensing altogether, since not every security-adjacent role needs one. Installing CCTV hardware, alarm systems or access control equipment is generally a trade skill governed by industry certification schemes like NSI and SSAIB rather than SIA licensing, since it doesn't involve the front-line "operative" activities the SIA regulates — someone can be an excellent, fully certified installer without needing, or being expected to hold, an SIA licence at all. This is a genuinely useful distinction when comparing quotes or credentials, since asking an installer for an SIA licence number is asking the wrong question; the right question for an installer is whether their company holds NSI or SSAIB accreditation instead.

Ultimately, the safest approach for any business or household bringing in contracted security staff — guards, door supervisors, or CCTV operatives working under contract — is to treat licence verification as a standard, unremarkable step before work begins, in the same way you might check a tradesperson's insurance. It costs nothing, takes only a few minutes on the SIA's register, and closes off one of the more common ways a security arrangement can go wrong before it's even started.

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