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When the remote gaming duty on UK online casinos almost doubled on 1 April 2026, from 21% to 40% of gross profit, the first question for operators was margin. Six months on, a different question is reaching ordinary players: what happens to your online casino balance when the brand you signed up with stops serving Britain?

For most people the sums involved are small, a few pounds left after an evening's play or a bonus that never cleared. But the rules governing that money are very different from those protecting a current account, and the details sit in terms and conditions that few customers read until the day a farewell email arrives.

Why Brands Have Been Leaving

Demand is not the problem. Gambling Commission figures published in September put online casino gross gambling yield at £5.7bn for the latest year, up 14.8%, but those numbers cover the period before the higher duty applied. The question for operators now is how much of that revenue is left once the Treasury takes its share.

Tax is one pressure among several. New deposit-limit rules took effect on 30 September and compliance costs keep climbing. Some groups have pulled out of Britain altogether.

Others have chosen consolidation. Groups that once ran dozens of near-identical sites on a single platform are cutting the weaker ones, because each website carries its own marketing, customer service and compliance bill. Customers of a closed site are often moved onto a sister brand rather than lost.

Closing a Website Is Not the Same as Going Bust

For anyone with money still in an account, the difference between a closure and a collapse decides whether the money comes back. A brand closure usually means the company behind it is still trading and still holds a Gambling Commission licence, so its obligations to customers carry on.

Few of the departing brands were rogue operators, either. Some handed back a licence, some left when the rules changed and some simply stopped trading.

The licensed market itself has not emptied. Casino.net, which keeps UK online casinos ranked on safety, still lists 108 casinos it has reviewed for British players, and gives safety, which covers the licence, responsible gambling tools and privacy, a quarter of its algorithm score. That weighting reflects the point that matters here: the licence, not the brand name on the homepage, is what carries the obligations to customers.

When a brand's UK site is switched off, it often begins forwarding visitors to a sister site that runs on the same licence and the same platform. A customer in that position is still dealing with the same company under a different name.

Insolvency is the harder case. If the licence holder itself fails, what customers get back depends on how the business chose to hold their money in the first place.

Where an Online Casino Balance Sits Legally

The regulator is blunt about this. Money deposited with a gambling business 'is not protected by the Commission or government the way that personal bank accounts are', and there is no equivalent of the FSCS guarantee that covers savings.

Instead, every licensed operator has to declare one of three ratings, set out in the Gambling Commission's guide to what happens to your money if a gambling business goes bust. Under 'not protected', customer balances count as part of the company's assets in an insolvency and are likely to be lost.

'Medium' means the firm has made arrangements, such as insurance, to return funds, although repayment is not guaranteed. 'High' means the money sits in a trust account controlled by an independent trustee and checked by an external auditor.

Since 31 October 2025, operators holding unprotected funds have also had to remind customers of that every six months, and players must acknowledge the notice before they can use the balance again.

The question of custody has surfaced well beyond gambling this year. When crypto exchange Bitget froze withdrawals after a $351.6M wallet breach, its customers were reminded that a balance on a screen is a claim on a company, not cash in hand. Bitget had a reserve fund to cover the loss. A casino balance has no such cushion against insolvency unless the operator's rating says so.

What to Do If Your Casino Brand Has Gone

If an operator emails to say it is leaving the UK, the practical advice is to withdraw rather than wait. Closure notices can come with a deadline, and a withdrawal can stall on identity checks if the documents on file have expired since the account was opened.

Most licensed sites also pay out only to the card or account that funded the deposit, the same closed-loop control that came under scrutiny when stolen debit cards were reportedly used to fund betting accounts on Polymarket's US platform. A player who has since cancelled that card should expect extra checks.

Check the protection rating in the terms first, then contact the operator's support team in writing and keep a copy. If that goes nowhere, every licensee must give customers access to an approved alternative dispute resolution service. The Independent Betting Adjudication Service, known as IBAS, takes complaints against many UK licensees, including those that have stopped trading.

Players moved onto a sister site should check that the new brand shows the same licence number in its footer, and that any balance carried across matches what was there before.

What Comes Next for UK Players

The next pressure point arrives in April 2027, when duty on remote betting rises to 25%. Groups that run casino and sportsbook brands side by side will be reviewing their portfolios again, and more closures would not be surprising.

For players over 18, the useful habit is less about guessing which brand survives and more about treating a casino account as money set aside for entertainment: kept small, and withdrawn once it is no longer being played with. The protection rating in the terms is the one line that says what happens if that habit comes too late.