If you’re thinking about playing at an online casino in the UK, checking whether it holds a valid licence is the most important step before you do anything else. The UK Gambling Commission (UKGC) is the body responsible for regulating all commercial gambling in Great Britain, and any legitimate operator serving UK players must hold a licence from them. Before you decide where to play Slots or any other online casino game, verifying a site’s licence takes only a few minutes.
Why the licence matters
A UKGC licence isn’t a rubber stamp. Operators have to clear a series of requirements to get one – financial checks, software audits, fair play standards, and more. Licensed sites must also offer responsible gaming tools and are held to account if they don’t meet their obligations. Unlicensed operators have no such requirements, which means your deposits, personal data, and any potential winnings have no formal protection.
According to the Gambling Commission’s public register, there are currently over 2,600 licensed gambling businesses in the UK. That’s a large number – but it also means there are operators out there that don’t make that list. It’s worth knowing how to tell the difference.
What to look for on the site
Most licensed online casinos display their UKGC licence details in the footer of their website. You’ll typically find a licence number alongside the Gambling Commission logo. That number is what you use to cross-reference against the official register.
Some operators hold more than one licence – for instance, a UKGC licence for UK players and a Malta Gaming Authority (MGA) licence for other markets. If you’re based in the UK, the UKGC licence is the one that counts.
How to use the UKGC public register
The Gambling Commission maintains a free, publicly available register of all licence holders. Here’s how to use it.
Head to gamblingcommission.gov.uk and find the public register section. You can search by the operator’s name or by their licence number. The register shows whether the licence is active and what activities it covers – casino gaming, sports betting, and so on. If a site claims to be licensed but doesn’t appear on the register, or if the licence number doesn’t match, that’s a clear sign something isn’t right.
The register also shows any regulatory action taken against a business, including fines or conditions attached to the licence. It’s a useful reference point if you want to understand more about how an operator has conducted itself.
SSL encryption and secure connections
A UKGC licence is the main thing to check, but it’s also worth confirming the site uses a secure connection. Look at the URL in your browser – it should start with “https” rather than “http”. The “s” indicates the site uses SSL encryption, which protects the data passed between you and the casino. No “s”? That’s reason to be cautious.
Third-party testing and certifications
Licensed operators are required to use software that’s been independently tested. Organisations like eCOGRA audit casino games to confirm that outcomes are produced by certified Random Number Generator (RNG) technology – meaning each spin, hand, or roll is entirely random and can’t be altered.
You might spot an eCOGRA certification seal in a casino’s footer, near the licence details. It’s not a substitute for checking the UKGC register directly, but it’s a further sign that the games have been assessed by an independent body.
What to do if something doesn’t add up
If a site displays a UKGC logo but the licence number doesn’t appear on the public register (or there’s no licence information at all), the safest thing to do is not continue. The Gambling Commission also accepts reports about unlicensed operators through its website.
There’s no obligation to play anywhere you’re not confident about. The public register is a straightforward tool, and checking it is the most reliable way to confirm that an online casino in the UK is operating within the law.
