Slot complaint ADR in the UK

What slot complaint ADR means for UK players

ADR stands for alternative dispute resolution. In gambling it means an independent body looks at a complaint you and a licensed operator couldn't settle between you, and gives a decision. The Gambling Commission describes ADR as a free, independent service, and its guide to taking a complaint to an ADR provider (opens in a new tab) is the official starting point. It sits within the wider framework explained on our UK slot machine rules hub.

For slot players the typical disputes are about money: a win that was voided, a bonus that was removed, a withdrawal that was held, a machine that swallowed credit. ADR does not replace the operator's own process. It is the second stage, used only once the business has had its chance to fix things and has either refused or run out of time.

One point surprises many people: the Gambling Commission does not resolve individual complaints. It licenses and regulates businesses, and it can act against an operator whose behaviour breaks licence conditions, but it will not order a casino to pay you. That job falls to the ADR provider, and after that, potentially, the courts.

Every business licensed by the Commission, online or on the high street, must have a complaints procedure and access to ADR. This page covers the British system. Northern Ireland has separate gambling law; see our page on gaming machines in Northern Ireland.

Step one: complain to the casino, arcade or venue

The Commission's step-by-step guide to complaining (opens in a new tab) is clear that you start with the business itself. Online, that means the complaints section of the help centre or terms. In a venue such as a betting shop, arcade, bingo hall or casino, you can complain in person and ask for a copy of the complaints policy.

1. Read the terms that applied when the problem happened: bonus terms, game rules and the general terms of the account.
2. Write down the facts: date, time, game name, stake, balance before and after, and what went wrong.
3. Send the complaint through the operator's published complaints route, not just a chat with customer service, and say clearly that it is a formal complaint.
4. Attach your evidence (screenshots, game history, receipts or tickets) and keep a copy of everything you send.
5. Note the date the business received it: the eight-week clock starts from there.
6. If the first answer doesn't settle it, ask for the complaint to be escalated to a more senior person, as the operator's process allows.

The Commission also mentions Resolver, a free online tool that can help you draft and send a complaint. It is an independent company and not every gambling business accepts complaints through it, so check the operator's own procedure as well.

The eight-week rule and the deadlock letter

Once the operator receives your complaint, it has eight weeks to resolve it. During that time it should investigate, tell you the result and explain your options if you are unhappy, which may include escalating within the business. If the complaint is still unresolved after eight weeks, the operator must offer referral to ADR.

Many operators end their process with a deadlock letter (sometimes called a final response). It confirms the business can't do any more and tells you how to refer the dispute to its ADR provider. The letter is useful but not essential: if eight weeks pass without a final answer, you can still move to ADR.

The 12-month point matters. The Commission's list of approved ADR providers (opens in a new tab) says most providers may refuse late disputes, but the window must be at least 12 months from the operator's notice that it can't resolve the complaint. eCOGRA's listing adds that it may refuse disputes that arose more than a year ago. Don't sit on a deadlock letter for months.

Approved ADR providers for slot complaints and the sectors they cover

Each operator picks its own ADR provider from the Commission's approved list, so the body you use depends on where you played. An online casino might use IBAS or eCOGRA, while a pub or members' club machine dispute could go to Pegasus. The list below reflects the Commission's page as last updated on 15 January 2025.

IBAS is the name most UK slot players meet. According to IBAS's own site (opens in a new tab), the service is free for consumers and its registered companies agree to be bound by its decisions up to £10,000. Other providers set their own rules on scope and appeals, which they publish.

This list is changing. In its consultation response of 18 December 2025 the Commission set out changes to ADR under the Digital Markets, Competition and Consumers Act 2024 (opens in a new tab): ADR in the licence conditions is to refer to providers accredited by the Secretary of State rather than approved by the Commission, with timing dependent on commencement. The Commission's consumer ADR page was updated on 15 May 2026 to remove some ADR information because of those changes. Always use the provider your operator names in its terms or deadlock letter.

What a slot complaint ADR provider can and cannot decide

ADR providers adjudicate disputes about whether the operator applied its terms and the rules correctly. They review your information and the business's response, decide whether the complaint is within their scope, and if it is, contact the business and start the adjudication.

Usually within scope

• A slot win voided or reduced, where you think the terms didn't allow it.
• Bonus funds or free spin winnings removed for an alleged rule breach.
• A withdrawal refused, delayed without reason, or made conditional on extra checks the operator could have done earlier.
• A malfunction claim used to cancel a result you believe was genuine.
• Credit lost on a land-based machine that you say wasn't paid out or refunded.

Usually outside scope

• Pure customer service complaints (slow chat replies, rude staff) where no money is at stake.
• A business refusing to take your bet or your custom: operators may decide whom they deal with and on what terms.
• Complaints about the house edge itself, or that a slot 'should' have paid more: RTP is a long-run average, not a promise.
• Disputes with sites not licensed by the Commission.

That third point is where many slot complaints fail. A run of losses is not evidence of a fault. Every spin is independent, a random number generator fixes the outcome before the reels stop, and games are checked by approved test houses (see how slot machines are tested). An ADR provider will look for a specific misapplied rule, not bad luck.

Common slot disputes: bonus terms, voided wins and malfunctions

Most slot complaints fall into a handful of patterns. The worked examples below show the kind of numbers an adjudicator checks. They are illustrations, not real cases.

Bonus wagering and stake caps

Since 19 January 2026 wagering on a bonus may not exceed 10 times the bonus (our 10x wagering cap page explains the rule). Take a £20 bonus: 10x means £200 of slot play before the bonus converts. If an operator's terms asked for more than that on a bonus credited after the cap came in, that is a point to raise. Equally, many bonuses set a maximum bet while the bonus is active. A player who staked £6 a spin under a £5 cap is likely to lose the bonus winnings, and ADR would normally uphold that if the term was clear and shown before opt-in.

Voided wins and max win caps

A slot can only pay up to its published maximum, so a win shown above the cap will be reduced to the cap (see slot max win caps). That is different from an operator voiding a win entirely. Our page on whether a casino can refuse to pay a slot win covers the grounds operators rely on and where they are on weak ground.

Malfunctions and dropped connections

Most game rules say a malfunction voids pays and plays. Online, a dropped connection usually doesn't change anything: the result was decided on the server when you pressed spin, and the game should show it when you reload (what happens if your connection drops mid-spin). On a land-based machine, ask staff to check the machine's meters straight away; our guide on what to do if a slot machine malfunctions has the details.

Building your evidence: game history, rules and screenshots

Adjudicators work from documents. The stronger and better organised your file, the quicker a provider can decide whether you have a case. Online slots keep a detailed record, so use it.

1. Download or screenshot your game history for the disputed session, including the round ID that the game records for each spin.
2. Save the game rules from the game help screen as they stood at the time, including the RTP and any malfunction clause.
3. Save the bonus or promotion terms you opted into, with the date.
4. Keep emails and chat transcripts with the operator, in order.
5. Write a one-page timeline with amounts in pounds: stake per spin, the win shown, the amount paid or removed.
6. State the outcome you want: the win paid, the bonus restored, the deposit returned.

UK slot rules help here. Since 31 October 2021 online slots must show your net position and the time you've been playing (net position display rule), and there's no autoplay, so each spin is a separate recorded action. That makes sessions easier to reconstruct than they used to be.

Complaints about pub fruit machines, arcades and casino slot machines

ADR isn't only for online slots. Licensed venues have the same duty to run a complaints procedure and offer ADR, which is why the Commission's list includes providers for adult gaming centres, bingo, betting and pubs. The route differs slightly because the evidence is physical.

• Pubs and clubs: a pub fruit machine is a Category C or D machine (£1 maximum stake and £100 maximum prize on Category C). Speak to the licensee or manager on the spot; the machine supplier usually has to inspect the meters.
• Arcades: adult gaming centres run Category B3, B4, C and D machines. Ask staff to note the machine number and time.
• Betting shops: betting shop machines include B2 and B3 content at a £2 maximum stake. Shops can usually pull a machine's transaction record.
• Casinos and bingo halls: casino slot machines include Category B1 (£5 stake, £10,000 prize) and the bingo hall floor carries B3, B4, C and D machines. Ask for the duty manager and the complaints policy in writing.

Whatever the venue, the stake and prize limits in our gaming machine categories guide set the outer edge of what any machine can pay. A complaint that a Category C machine owed £250 will fail, because the category's maximum prize is £100. If credit was genuinely lost, our page on getting money back from a slot machine explains what venues normally do.

After ADR: appeals, small claims and reporting to the Commission

If you're unhappy with the final adjudication you may be able to appeal; the provider should explain its appeals procedure, the grounds, any time limits and what happens next. Beyond that, the Commission's guidance says you might consider the small claims court, and recommends taking your own independent legal advice first.

You can also tell the Commission about a business you think is breaking its licence. It won't resolve your personal dispute, but reports feed into its compliance work, and its consumer rights page (opens in a new tab) summarises what licensed businesses owe you: a published complaints procedure, clear terms and access to ADR.

There is no gambling ombudsman. The 2023 white paper discussed one, but none has been created; instead ADR is moving to accreditation under the DMCC Act, as covered in our page on the white paper and slots.

UK rules a slot complaint can rely on

An ADR case is strongest when it ties the problem to a specific rule. These are the ones that come up most with slots.

Stake limits can feature in disputes too. If a game let an 18–24-year-old stake £3 a spin, that breaches the online slot stake limits, and you can say so in a complaint. Our slot game design rules page explains the 2021 rules in full.

What the slot complaint and ADR rules don't cover

• Unlicensed sites. If an operator has no Commission licence, there is no UK complaints duty and no UK ADR route. Check the public register before you deposit.
• Northern Ireland venues. Gambling there is under separate law, and the Commission's rules are written for Great Britain.
• Losses through normal play. RTP describes the long-run average across millions of spins; a session can run far below it without any fault. Our RTP explainer shows why.
• Disagreement with a game's maths. Volatility and hit rate are design choices, tested before release. Claims that a slot is rigged need evidence of a fault, not a feeling; see are slot machines rigged?.
• Feature buys. Slots at UK-licensed casinos don't offer them, so there's nothing to dispute; see bonus buy in the UK.

If a dispute is affecting your sleep or your finances, step back from playing while it's resolved. The safer gambling page lists free support, including the National Gambling Helpline on 0808 8020 133.

Slot complaint and ADR timeline in Great Britain

Where to play: check complaints and ADR before you sign up

The offers below are from Coral Casino and Ladbrokes Casino, both run by LC International Limited, part of Entain, under UKGC account 54743. The same business runs both brands, so one person may not be able to hold new accounts at both: check the terms.

Before you deposit anywhere, find three things: the complaints procedure, the named ADR provider, and the withdrawal process. Coral's help centre, for example, says withdrawals go through internal approval and then take from instantly to five banking days depending on the method; our Coral withdrawal time page sets out the details. For the ADR provider each brand uses, check its terms or help centre, as it isn't something we list.

Coral's current offer for new players is deposit and bet £10 on slots to get 100 free spins (10p each, selected games, valid 7 days, no wagering on free spin winnings; some payment methods excluded; 18+, terms apply). Ladbrokes offers new customers up to 500 free spins: deposit and spend £10 on slots, then get 50 free spins a day for the first 10 days, 10p each, claimed daily, no wagering; some payment methods excluded; 18+, terms apply. Game availability changes, so search each casino's lobby. Treat slots as paid entertainment: losses are likely over time.

18+. Gambling should be entertainment that costs money, not a way to make it. Decide a budget before you play: plan a slot budget. Free, confidential help: National Gambling Helpline 0808 8020 133.