£1 Deposit Casino UK: Where a 1 Pound Deposit Works and What It Buys (October 2026)

Quick answer: where a £1 deposit works

• Check two minimums, not one. A pound goes through only where the casino’s cashier and the payment method you use both accept £1, and the site’s payments help page shows both figures before you register.
• Know where the ranking starts. The casinos ranked above hold offshore licences, so GamStop, the 10x wagering cap and the UK complaints route do not cover them, and their welcome packages start at £20 or €20. At 10p a spin that is 200 stakes, against the ten a pound buys.
• Expect ten spins, not an evening. £1 pays for ten 10p spins, ten 10p bingo tickets or a single £1 roulette bet, and on four model slots half of all £1 balances were gone within 13 to 27 spins.
• Read the withdrawal terms before paying in. Only 3% to 5% of simulated £1 sessions ever touched £10, so the term that decides what a pound is worth is whether a balance below the minimum withdrawal can leave in full.
• Treat any bonus as unlikely. A welcome offer’s qualifying deposit lives in its own terms, apart from the cashier minimum, so a pound can be accepted and still earn nothing extra. A no-deposit offer tests the same sign-up and cashier for nothing.

A £1 deposit is possible wherever the cashier and your payment method both accept it, and nowhere else. The Gambling Commission does not set a minimum deposit for the casinos it licenses. Each casino sets its own minimum in its cashier, and a payment method can carry a minimum of its own on the same site, so one site can show different figures for a debit card and for a bank transfer. The only reliable answer for a given site is the one printed in its cashier, in its payments or banking help page, and in the terms of the method you plan to use.

The rules that do apply are identical for £1 and for £1,000. Age and identity must be verified before you gamble at all, a requirement in force since 7 May 2019, so a pound cannot be played until the checks are done. Every new customer must be prompted to set a deposit limit before the first deposit, a requirement since 31 October 2025. Credit cards have been banned for gambling since 14 April 2020, which makes a card deposit a debit-card deposit, and cryptocurrency is not a deposit option at UK-licensed sites, although nothing bans it outright.

What the pound buys is small and quick. Ten 10p spins take 25 seconds at the fastest pace UK slot rules allow. Ten 10p bingo tickets give you one ticket in each of ten games. A £1 bet on red at roulette is settled by a single spin of the wheel. Over the long run a 96% slot pays back 96p of each pound staked, a single-zero roulette wheel 97.3p, and bingo whatever share of ticket sales the room puts into prizes.

Searching for one-pound deposits also brings up offshore casinos that take cryptocurrency and advertise very small deposits. They are not licensed in Great Britain, and a deposit there, however small, gives up GamStop, the 10x cap on wagering, the UK complaints route and any bank protection on the coins sent. The offshore section names them and spells out the loss.

What to compare on each £1 deposit casino

Two casinos can both accept a pound and still leave it with very different prospects. The difference sits in six lines spread across the cashier, the terms and the game screen, and on a deposit this small each line weighs more than it would on £20. Work through them for every site on your shortlist before the pound moves.

The rows run in order of importance. The first decides whether £1 is possible at all, the third whether anything it wins can be collected, and the last who will hear you if something goes wrong. The middle rows shape the play: a fair RTP version and a game that suits ten stakes do more for a pound than a welcome offer could.

One habit protects a pound better than any row: decide before depositing what you will do if the balance reaches the minimum withdrawal, since the median £1 session at 10p ends within 13 to 27 spins.

What your £1 buys: slots, bingo or roulette

Three ways of spending exactly a pound make a clean comparison: ten 10p spins, ten 10p bingo tickets and one £1 bet at roulette. Each keeps part of the pound on average: a few pence at the slot and at the wheel, more at bingo, depending on the room. They differ in how long they last, in how widely the results spread and in what the pound can turn into, and those differences weigh more on £1 than on any larger deposit.

Slots: what ten 10p spins hand back

The slot figures come from simulated sessions on four model slots, the same four used across this site. Model A has medium volatility, an RTP (return to player, the long-run share of stakes paid back) of 96%, a bonus round about once every 170 spins and a top win of 2,500 times the stake. Model B is high volatility at 96.21%, built to resemble Book of Dead, with a bonus round about once in 200 spins and a 5,000x top win. Model C is medium-high at 96.71%, built to resemble Big Bass Bonanza, at 1 in 180 and 2,100x. Model D is low volatility at 96%, at 1 in 120 and 200x. They are models rather than copies of the real games, whose pay tables are not published.

Each column below summarises 400,000 sessions of exactly ten spins at 10p, with the winnings added up and not replayed. That is precisely what a pound staked once returns.

The average and the typical result part company at once. Every model hands back about 96p for the pound on average, because that is what its RTP says. The median, the middle result when all sessions are lined up from worst to best, is only 30p to 67p. Between 70% and 83% of the time the ten spins return less than the pound that paid for them, and the average is held up by the small minority that return several pounds. On Model B, the high-volatility design, almost one session in eight paid nothing at all on any of the ten spins.

The bonus round, where slots of this kind keep most of their large prizes, will very probably not appear. The chance of meeting it at least once in ten spins is 4.9% to 8.0% on the four models, which is one minus the chance of missing it ten times running. A pound at 10p is mostly a look at the base game, so if the point of the deposit is to watch a particular feature, ten spins are the wrong tool.

Volatility decides how the ten spins feel. Model D pays something on 36.8% of spins and returned less than the pound 69.6% of the time. Model B pays on 19.2% of spins and returned less 82.7% of the time, yet it also produced the largest results, with the luckiest 1% of sessions collecting £10.12 or more. Low volatility gives a pound that usually comes back in part; high volatility gives a pound that usually comes back as very little and now and then as a lot.

How long your ten spins last

Online slots at UK-licensed sites must leave at least 2.5 seconds between spins and may not offer autoplay, turbo or quick-spin buttons, rules fully in force since 31 October 2021. Ten spins therefore take at least 25 seconds. At an assumed 600 spins an hour, one every six seconds and closer to how most people play, they take a minute.

The Commission’s own figures give the scale. In January to March 2026 the average online slots session lasted 15 minutes and 124 spins, which together work out at roughly one spin every seven seconds, and it produced £3.82 of gross gambling yield: on average, each session cost the people playing it £3.82. Ten spins at 10p are about a twelfth of an average session’s spins, and a pound is about a quarter of its cost. Across the whole quarter, operators kept about 3.1p of every spin on average, £773m from 25.1 billion spins.

Bingo: the most playing time for a pound

Bingo runs on different arithmetic. A 90-ball ticket holds 15 numbers in three rows of five, and prizes go to the first tickets to complete one line, two lines and the full house. There is no RTP in the slot sense, because what a room pays back depends on its prize rules and the tickets sold, and the Commission’s technical standard RTS 3 lets a bingo site describe how it allocates prizes instead of quoting an RTP. The figures below therefore rest on stated illustrations rather than any site’s rules: a prize pool worth 70%, 80% or 90% of ticket sales, split 15% to one line, 25% to two lines and 60% to the full house.

In a room this size nothing a single 10p ticket wins comes near £10. The full house is worth £2.40 at an 80% payback, and one ticket taking all three prizes in the same game would collect £4. Bigger rooms pay bigger prizes but spread them across more tickets: at the same price and payback, the full house reaches £10 only once a room has sold about 209 tickets, and a single ticket’s average share of it is then about 1 part in 209.

What bingo gives a pound instead is time. Ten games at one ticket each last ten games whatever happens, since every ticket is bought before its numbers are called and a run of losses cannot end the session early. At an assumed 12 games an hour, that is 50 minutes for £1, against 25 seconds of slot spins at the fastest legal pace. The 75-ball format, played on a five-by-five card with a free centre square, pays for patterns, and the same payback arithmetic applies. Room sizes, prize sharing and call counts are covered in the guide to online bingo.

Roulette: the lowest edge, settled in one spin

At roulette a pound is a single bet, and its chances are exact because they follow from the wheel. A single-zero wheel, the European layout, has 37 pockets: 18 red, 18 black and the zero. Nothing in this table is simulated.

The pence missing from each average are the house edge: 2.70% on a European wheel and 1.35% on even-money bets under la partage, the French rule that hands back half an even-money stake when the ball lands on zero. Both edges are smaller than a 96% slot’s 4%, so per pound staked roulette costs less. What it does not give is time. One bet has one outcome: just under even odds of doubling the pound, or a 1-in-37 chance of £36 on a single number, and in either case the most likely result is that the pound is lost.

UK stake limits do not reach the roulette table. The £5 and £2 caps per spin apply only to online slots, as does the 2.5-second rule, so the table’s own minimum, shown at the table, decides whether a £1 bet is possible. Live tables bring variants with different payouts. Lightning Roulette, for instance, pays 29 to 1 on a straight-up number that is not struck by a multiplier, instead of 35 to 1, and its RTP is not published on the provider’s page. The live casino guide covers those games and their exact session odds.

Which game suits your pound

No option is free and none is a way to win. They are different shapes of a small cost: about 4p spread over ten quick spins, 10p to 30p spread over most of an hour of bingo at the illustrative paybacks, or 2.7p settled in one moment at the wheel. Which shape suits a pound depends on what the pound is for. If it is for a look at a site, the cheapest look of all is a no-deposit offer, which tests the same verification and cashier and costs nothing.

How long £1 lasts and how often it reaches £10: 40,000 simulated sessions per slot

Ten spins and stop is one way to spend a pound. The more common way is to keep playing whatever comes back until the balance is too small for another spin. To see where that leads, 40,000 sessions on each model slot started with £1 and staked 10p a spin, feeding every win back in, until the balance could no longer cover a stake or 1,440 spins had been played, which is one hour at the 2.5-second minimum. Each session recorded when it went bust, whether the balance ever touched £2 or £10, and whether it was still going at fixed points along the way.

Half of all £1 sessions were over within 13 to 27 spins: 33 to 68 seconds at the fastest legal pace, or between 1 minute 18 seconds and 2 minutes 42 seconds at the assumed 600 spins an hour. On Models A to C fewer than one session in ten was still going after 100 spins, while Model D, the low-volatility design, kept about one in five alive that long. By the end of the hour between 97% and 99% of sessions had run out of money.

Why a typical pound ends on a few pence

The average balance at the end was 50p to 85p, which looks like a modest loss. The median was 5p to 7p, the odd pence left when the balance could no longer pay for a 10p spin. Both are true at once because a handful of sessions caught a bonus round early and carried several pounds to the finish, lifting the average, while most lost nearly everything within a couple of minutes. A simple sum shows the same gap from the other side. On a 96% slot a 10p spin costs 0.4p on average, so a pound’s worth of average cost would take 250 spins; half the £1 sessions on Model A were finished after 16. The average tells you what play costs. It says almost nothing about how long a small balance survives.

Model D shows the reverse effect. It kept sessions alive longest yet finished the hour with the lowest average balance, 50p, because a session that keeps going keeps paying the house edge on every spin, and with a top prize of 200 times the stake Model D has few large wins to pull a handful of sessions far ahead.

Why a low-volatility slot stretches a pound furthest

Model D touched £10 in 5.0% of sessions and doubled in 27.3%, the best of the four on both counts, although its top prize is the smallest: 200 times the stake, or £20 at 10p. With only ten stakes in the balance, survival decides everything. Model D pays something on 36.8% of spins and reaches its bonus round about once in 120, so it keeps a pound alive long enough to climb in small steps. Models A to C pay a larger share of their return through rare bonus rounds, and a pound usually runs out before one arrives. Model B, which pays on only 19.2% of spins, was the quickest to bust and the least likely to double.

A second reason applies to every game. On a game that pays back less than it takes, the average final balance cannot rise above the starting pound. When a high-volatility slot does carry a pound past £10, it often does so with one large win that lands well beyond the mark, and every pound of that overshoot has to be balanced by more sessions that end with nothing. A slot that creeps upwards in small wins arrives nearer to £10, and so can arrive more often.

Ten spins and stop, or play on: what each choice gives you

The two ways of spending a pound produce opposite shapes. Stopping after ten spins keeps whatever they return, a median of 30p to 67p, but gets to £10 in only 0.1% to 1.3% of sessions. Playing on lifts the chance of touching £10 to 3.0% to 5.0%, because winnings get more chances to grow, and the price is that the typical session ends with a few pence. Neither choice changes the cost per pound staked. Replaying winnings simply stakes more pounds, and each of them pays the same edge.

The most a pound can do: the 10% ceiling on reaching £10

There is a hard limit on how often £1 can become £10, and it holds for every game, stake and system. On a game that pays back no more than it takes in, the average final balance cannot exceed the starting £1. If one session in ten finished on £10 and the other nine on nothing, the average would already be exactly £1. So no way of playing a game whose RTP is 100% or less can turn £1 into £10 more often than one time in ten, and real casino games, all of which keep something, fall short of that.

The roulette chain makes the mechanics visible. Four reds in a row turn £1 into £16 with a probability of 18/37 multiplied by itself four times, which is 5.6%, and the chain returns 89.6p per pound on average. The gap is no accident: along the way a total of £3.84 is staked on average (£1 first, then £2 about half the time, and so on), and 2.7% of £3.84 is 10.4p. Every route pays the house edge on everything it stakes; the routes differ only in how they trade a small chance of a bigger balance against a larger chance of a smaller one. In every row the most likely outcome is that the pound is gone, and none of them is a reason to try.

Getting a small win out: the £10 minimum withdrawal

Casinos set a minimum withdrawal in their terms, and £10 serves here as the example. From a pound played at 10p, 95% to 97% of simulated sessions, depending on the model, never touched £10, so for them a withdrawal never came into question. The 3% to 5% that did touch £10 would have £10 to take out only if they stopped there and then; the figure measures the chance of getting there, not of staying, and a session that plays on can lose it again.

The awkward case is a balance that ends between £1 and £10: real money, yours, but below the minimum. Three checks are worth making before the deposit rather than after it.

• Can a full balance below the minimum be withdrawn? In March 2018 BGO Entertainment gave the Competition and Markets Authority (CMA) an undertaking not to use minimum withdrawal limits to block withdrawal of a full balance, and in August 2018 the Commission warned every operator to remove unfair withdrawal restrictions. A site’s terms, or its support team in writing, will tell you how it treats a small balance.
• What happens to a balance left alone? In August 2018 Jumpman Gaming and Progress Play undertook to the CMA not to confiscate money from inactive accounts. Read the dormant-account clause of any site where you might leave a few pounds behind.
• Where does a dispute go? Into the site’s own complaints process first, which runs to a fixed deadline and ends with an independent adjudicator; the rules section below sets out the timetable.

Playing on to reach the minimum is the move the arithmetic warns against. From £4 the chance of reaching £10 is at most 40% even on a game with no edge at all, and every extra spin pays the edge. How long a withdrawal then takes, and which steps the casino rather than the bank controls, is covered in the guide to fast withdrawal casinos.

UK rules that protect a £1 deposit

No rule makes a casino accept or refuse a deposit of any particular size. Every other rule applies to a pound exactly as it applies to a larger sum, and several of them weigh more on a small deposit than on a large one, because the hurdles are fixed while the money is not.

The withdrawal side has its own principle. “A gambling business should not hold on to your money unnecessarily,” in the Commission’s words. Where a business needs more information from a customer it must ask at the earliest opportunity, and it cannot make information it could reasonably have asked for earlier a condition of paying out, although it may ask at withdrawal time if the need could not have been spotted sooner, as after a sudden spike in betting. For a pound that has grown, the checks done at registration should normally carry the withdrawal, and a surprise request at that stage can be questioned against that rule.

Complaints follow a fixed path. The site has eight weeks to complete its whole process, including any internal escalation, and must then tell you how to escalate to an independent ADR (alternative dispute resolution) provider. The Commission describes itself as “not an ombudsman”: it licenses and enforces, but it does not resolve individual disputes.

Calculator: what your play costs on average

The calculator works out the average cost of play from four inputs: the stake, the rounds played an hour, the hours played and the game’s RTP. It opens at 10p a spin, an assumed 600 spins an hour, a quarter of an hour (the official average slots session is 15 minutes) and a 96% slot, which gives 150 spins, £15 staked and an average cost of 60p. That last figure is the point. A quarter of an hour of 10p play costs well under a pound on average, yet in the simulation half of all £1 balances were gone within three minutes at that pace, because an average says nothing about the order in which wins and losses arrive. Change the RTP to the one in a game’s information screen, or the stake to 20p, and watch how quickly the cost moves.

UK casino brands: what their welcome offers mean for £1

Whether a given brand takes £1 is settled in its cashier on the day, because minimums change and can differ from one payment method to the next on the same site. What the groups behind UK brands do reveal is how their welcome offers are built, which matters because a pound the cashier accepts can still fall outside the welcome; how far one set of account rules stretches across sister brands; and how to confirm who holds the licence. Every brand below is licensed by the Gambling Commission, so verification before play, GamStop, the deposit-limit prompt, the credit-card ban and the 10x wagering cap apply to all of them, and not one of them has crypto in its cashier.

One pattern runs through the table. Across the groups, welcome offers are built around deposits that the operator chooses, and the cashier minimum is a separate number. A pound can therefore be accepted and still qualify for nothing. That costs nothing if the pound was meant as a test, but it is worth knowing before expecting a bonus to arrive.

How to confirm who holds a brand’s licence

Licensed brands name the company holding their licence, and that company’s Commission account number, in the site footer. Casumo, NetBet, Mr Vegas, Videoslots and Pink Casino are examples, and entering the number in the Commission’s public register confirms the licence before any money moves. A pound is a small deposit, but the identity details you hand over for verification are not small, and that is the stronger reason to know who will hold them.

What the fines say about the regulator behind a brand

The Commission publishes enforcement action against the licence holder rather than the brand. In date order, the largest fine or settlement for each of these groups: Betway, £11.6m (2020); 888, £9.4m (2022); Entain, £17m (2022); William Hill, £19.2m (2023); Kindred, £7.1m (2023); Betfred, £3.25m (2023); bet365, £582,120 (2024). None of that predicts how a cashier will treat a pound. It shows that a regulator with real powers stands behind each licence, which is the one thing the sites in the next section cannot offer.

Offshore casinos and tiny crypto deposits: what you give up

Outside the UK system the same search leads to casinos built around cryptocurrency, where a deposit can be a small fraction of a coin and the pitch is how little it takes to start. None of them is licensed in Great Britain. The size of the deposit changes nothing about what a British player gives up by sending it. The casinos in our ranking sit outside the UK system too: their licences come from Anjouan, Curaçao and Costa Rica, their packages start at £20 or €20, and the protections listed below are missing there as well, so compare their cards with that in mind.

The same names recur. Rainbet holds a licence from Anjouan, in the Comoros, and is run by RBGAMING N.V. as a crypto-first casino taking Bitcoin and other coins, which you will not be offered at a licensed site, whatever the deposit size. Roobet and Gamdom are Curaçao-licensed crypto casinos that grew out of the gaming-skins market. One Curaçao company, Santeda International B.V., operates five brands, Mystake, Goldenbet, Rolletto, Donbet and Velobet; none is on the UK register or connected to GamStop, and all take cryptocurrency. Kinghills and NineWin come from a network of Curaçao-registered sister sites, launched recently with no public track record, and reach UK players through “not on GamStop” pages. Nothing here says any of them is running a particular promotion or accepts a particular amount.

What a pound sent to any of them leaves behind:

• Bank protection. A crypto deposit is not a card payment. A British player who funds an account this way has no regulator, no ombudsman and no bank to turn to if a withdrawal is refused.
• The complaints route. The Commission cannot act on a complaint about an unlicensed site, and there is no eight-week deadline or ADR provider at the end of the process.
• GamStop. A self-exclusion registered with GamStop does not reach these sites, which is the very thing “not on GamStop” marketing sells.
• The UK game rules. The 2.5-second minimum, the ban on autoplay and turbo, the £5 and £2 stake caps and the ban on win effects for returns at or below the stake are conditions of a UK licence. A site without one is not bound by them.
• The wagering cap. Wagering is not capped offshore; 30x to 60x is common, against a ceiling of 10x at licensed sites.

A coin balance also moves with the coin’s price, on top of whatever the games do to it. The law puts the offence on the operator: offering gambling to people in Great Britain without a Commission licence is an offence for the operator, and a player is not prosecuted, but every protection the licence carries is lost. The homepage section on spotting fake and offshore offers lists the warning signs.

How to deposit £1 at a UK casino, step by step

Most of the questions a pound raises can be answered before the pound moves. The order below follows the order in which a licensed site asks for things, with the withdrawal questions deliberately answered before any money moves, and it works for any UK site whose cashier you are weighing up for a one-pound start.

1. Confirm the licence. Find the licence holder and Commission account number in the footer and look the number up on the public register. No footer details, no deposit.
2. Read the payments page. Look for a payments or banking page in the help section; the cashier itself shows its limits once you have an account. Note the minimum deposit for the method you intend to use, because it can differ from the figure quoted for the site as a whole.
3. Read the withdrawal side before the deposit side. Find the minimum withdrawal, whether a balance below it can be withdrawn in full, any fee, and the dormant-account clause. If the terms are silent, ask support in writing before you pay anything in.
4. Register and verify. Age and identity are checked before any play, demos included. The checks are the same for £1 as for £100, so have your details ready.
5. Set a deposit limit at the prompt. Choose an amount for the period that you would not mind losing, not the amount you expect to deposit today.
6. Deposit with a method in your own name. A debit card or a bank transfer; credit cards are banned, and licensed sites do not offer crypto.
7. Choose the game by its numbers. Open the slot’s information screen for the RTP version on offer. Book of Dead, for example, has a default of 96.21% and lower versions down to about 84.2%; Big Bass Bonanza runs at 96.71% by default, with versions around 95.67% and 94.6%.
8. Decide the stopping rule in advance. Settle now what you will do if the balance reaches the minimum withdrawal. Once you request a payout, a licensed site may not give you the option to cancel it.

Seven £1 deposit myths, and what is true instead

• “A pound is too small to need ID.” Verification has come before any gambling at licensed sites since 7 May 2019, free demos and bonus play included, whatever the amount.
• “If the cashier takes £1, so does the welcome offer.” The offer’s own terms set its qualifying deposit, and that figure can be higher than the cashier minimum.
• “A good system turns £1 into £10.” On any game paying back 100% or less, no system beats one time in ten. The four model slots managed 3% to 5% at 10p, and four reds in a row at roulette 5.6%.
• “Small stakes mean cheap play.” The cost is a share of everything staked. A pound replayed until it is gone is often staked several times over, and each pass pays the edge again; the stake size only decides how quickly that happens.
• “Ten spins are enough to see what a slot does.” The chance of meeting the bonus round in ten spins was 4.9% to 8.0% on the models. Ten spins show the base game and little else.
• “Roulette is the safe home for a pound because its edge is lower.” The edge is lower, 2.70% against a 96% slot’s 4%, but a single £1 bet is all or nothing: on red the pound is gone after one spin 51.4% of the time, and on a single number 97.3% of the time. A lower edge means less lost per pound staked, not a smaller chance of losing this pound.
• “A tiny crypto deposit is a safe way to try a site.” The sites that take one are not licensed in Great Britain, and the deposit carries no bank protection, no GamStop and no UK complaints route.

£1, £3, £5 or £10: how far each deposit gets you

A pound is the smallest way in with your own money. The table sets it beside the larger deposits simulated in the same way and the two no-deposit offers closest to it in value, using the same simulations throughout.

Three pounds triples the stakes and roughly triples the chance of reaching £10, while how to stake them is a separate decision, measured on the £3 minimum deposit casino page. Five pounds gives fifty 10p stakes, and the £5 deposit guide follows them through each game and through the deposit offers that start at that size. Ten pounds already sits at the example minimum withdrawal, and at 10p its median life on the model slots was 247 to 1,029 spins, against 13 to 27 for a single pound.

The no-deposit rows cost nothing, which changes the comparison entirely. Ten free spins are the same £1 of play as a pound spent once, with the downside removed. A free £5 no deposit bonus at 10x finished on a withdrawable £10 more often than a pound of your own money touched £10. Across every row the price per pound staked is the same, about 4p on a 96% slot; what changes is how many pounds get staked, and whether the first of them is yours.

Keeping £1 deposits from adding up

The risk in a one-pound deposit is not the pound. It is the second, third and tenth pound: the simulation shows a typical pound lasting under three minutes even at an unhurried pace, and a deposit that small is easy to repeat without noticing the total. Sessions also run longer than people intend. In January to March 2026, 8.9 million online slots sessions, about 4.4% of the total, lasted more than an hour.

• Make the deposit limit do the work. The prompt before the first deposit is the moment to set it, so that repeated small deposits add up against a ceiling chosen in a calm moment rather than mid-session.
• Watch the net position on screen. UK-licensed slots must show your total wins or losses and the time played during a session. Look at it before any top-up.
• Give the pound one job and end it there. If the deposit is a test of a site, the test is finished once you have seen the verification, the cashier and a few spins. A second pound is a new decision, not the second half of the first.
• Let a withdrawal request close the session. If a pound does grow past the minimum withdrawal, asking for the payout settles it: since 31 October 2021 a licensed site may not offer to reverse the request, which protects a small win from a moment’s second thoughts.
• Use a time-out when the pounds start repeating. A short time-out locks the account for a set period and breaks the run.
• Self-exclude if it has stopped being a choice. One registration with GamStop covers every UK-licensed online gambling site.
• Talk to someone. The National Gambling Helpline is on 0808 8020 133 for anyone worried about their own gambling or someone else’s.

How we worked out the numbers

The slot figures come from Monte Carlo simulations in numpy with fixed seeds, run on four model slots: Model A (medium volatility, 96% RTP, a win on 27.9% of spins, bonus round about 1 in 170 spins, top win 2,500x), Model B (high, 96.21%, 19.2%, 1 in 200, 5,000x), Model C (medium-high, 96.71%, 23.9%, 1 in 180, 2,100x) and Model D (low, 96%, 36.8%, 1 in 120, 200x). The ten-spin table used 400,000 sessions per model with the winnings added up. The bankroll table used 40,000 sessions per model, starting at £1 and staking 10p until the balance could not cover a stake or 1,440 spins had been played; “touched £10” and “doubled” mean the balance reached that level before going bust. Bonus-round chances are one minus the chance of missing the round on every spin.

Roulette figures are exact from the rules of a single-zero wheel: 18 of 37 pockets red, a single number paying 35 to 1. Bingo figures come from simulated 90-ball games with randomly generated UK-style tickets; the paybacks of 70% to 90% and the 15/25/60 prize split are illustrations, and the ten-game figure is worked out from the simulated chance per game. The 10% ceiling follows from the fact that a game paying back 100% or less cannot raise the average balance. Official statistics are the Gambling Commission’s, with the period stated. Times use the 2.5-second legal minimum unless a pace is labelled as an assumption.

The limits matter. The models are not real games, whose pay tables are not public. Each session used one fixed stake, and players who change stake or stop when ahead get different results. Cashier and payment-method minimums were not modelled, because each site sets its own.

Frequently asked questions