On 17 September 2026 the Gambling Commission put the gross gambling yield of online casino games in Great Britain at £5.7bn for the year to March 2026. Yield is the money operators keep from stakes once winnings are paid, and slots produced £4.8bn of it.

A number that size is easy to read as proof of a general boom in digital gaming. The phrase covers more than one industry, though, and each part is counted by somebody different. Ukie, the games trade body, adds up what consumers spend on video games. The Commission measures gambling twice, once by asking adults what they did over the previous four weeks, and once through the returns that licensed operators file every quarter.

Kept apart, those sources say something narrower than “growing popularity”. Some of it runs against the headline.

Betting on sport and racing is the most common online gamble after lottery draws

The Commission’s count of people is the Gambling Survey for Great Britain, and its annual report for 2025 came out in July. Lottery-only players aside, one adult in six, 16 per cent, had gambled online in the four weeks before answering. The figure was 20 per cent for men and 12 for women.

Betting made up the largest single part of that. The report’s data tables put betting on sports and racing online or through an app at 8.4 per cent of adults, against 3.1 per cent who bet in person. Online slots reached 3.3 per cent, about one adult in thirty, and online casino games, which the survey counts apart from slots, came to 2.6 per cent. Even added together, the two casino products couldn’t have reached as many adults as online betting did.

One pair of figures is almost identical. Slots played online drew 3.3 per cent of adults, and fruit and slot machines played in person drew 3.2 per cent. Every estimate in the survey carries a margin of error, so a gap of a point or less may say more about sampling than about behaviour.

Each of these answers records that someone took part at least once in four weeks. A survey can’t tell one small stake from hundreds of them, so the money has to come from the operators’ own returns.

Online casino yield has risen by three-quarters since 2019-20, and slots supplied almost all of the rise

The money count comes from the Commission’s industry statistics, built from what operators report. The spreadsheet published with the September release lets a reader follow the online casino figure year by year.

In 2019-20, operators kept £3.23bn from online casino games. In 2020-21, a year of lockdowns, that rose to £4.01bn, and then it slipped to £3.83bn in 2021-22, the only annual fall in the series. Growth came back after that. The figure was £4.33bn in 2023-24 and £4.96bn in 2024-25, and the provisional total for 2025-26 is £5.70bn, up 15 per cent in the latest year alone.

Slots did nearly all the work. Their yield went from £2.35bn to £4.79bn over those six years, an increase of £2.44bn, while the online casino total rose by £2.47bn. Roulette went the other way, from £429m to £395m. Peer-to-peer poker fell from £97m to £37m. Slots now produce 84 per cent of online casino yield, up from 73 per cent.

Set that beside the survey’s slot figure and the scale looks odd. A product played by a small minority of adults in any four-week stretch took £4.8bn in a year. The survey’s 3.3 per cent covers a four-week window and the yield covers a full year of operator returns, so dividing one by the other gives no loss per player. Read together, they still point to a large sum coming from a narrow group of players.

New accounts outnumbered adults who gamble beyond the lottery by half again

Operators reported 32.4 million new account registrations for online casino, betting and bingo in 2025-26, 3 per cent fewer than the year before. They held 25.7 million active accounts at its end. Each of those is an account, and the survey suggests the people behind them are far fewer.

The survey estimated that about 31 million adults gambled in the past year. Take out the people who only played lottery draws and the share falls from 59 to 40 per cent of adults, which works out at roughly 21 million. A year’s new registrations outnumbered that group by about half again. The periods don’t match exactly, but the gap is too wide for timing to explain, which suggests many people open accounts at more than one site.

Opening an account costs nothing. Trying one costs a single deposit, so the size of the minimum sets the price of a first look. For gambling.com, a £5 deposit casino suits “new players, anyone testing an unfamiliar site and players who simply prefer to keep stakes small”. Of those three, the middle group is the one the registration figures describe. On how much to put in, its advice is that “a deposit you are comfortable with” counts for more than “chasing the lowest possible number”.

Comfort with a deposit is a different test from the one many gamblers start with. In the survey, 84 per cent of gamblers gave the chance of winning big money as a reason at least some of the time, and 57 per cent said they gambled to make money. Across the whole market the money flows the other way.

Keeping stakes small changes the size of a possible loss and nothing about the odds. The house edge is designed into each game a casino site offers. Across £94bn staked on online slots in 2025-26, operators kept £4.8bn, about £5.10 of every £100. That return was spread over billions of spins, and one person’s night on a slot can finish far above or far below it.

The survey measured harm too. Its harm scale, the Problem Gambling Severity Index, put 2.4 per cent of all adults at a score of 8 or more, roughly one in 40. The minimum age for these sites is 18, and UK-licensed sites take customers from Great Britain only. GamStop lets anyone block their own access to those sites free at gamstop.co.uk, and GamCare runs the National Gambling Helpline, which takes calls on 0808 8020 133 and messages by WhatsApp.

Online racing yield peaked in the lockdown year and has barely moved since

The Commission reports horse racing as its own line in the operators’ online betting returns, which makes the move online easy to follow. Bets on horses placed online yielded £346m in 2015-16, the first full year of the current online series, and £769m in 2025-26, more than twice as much, while the betting-shop counter’s racing yield fell to £456m. Most of that rise had already happened by 2019-20, when the online figure reached £654m.

The lockdown year, 2020-21, then pushed online racing yield to £855m, a peak it hasn’t reached again. In the five years since, it has sat between £729m and £769m. Online casino yield grew by almost half over the same stretch.

Behind that flat line, stakes fell. Online bets on horses totalled £10.0bn in 2021-22 and £7.85bn in 2025-26, about a fifth less, and yield held level only because bookmakers kept more of each pound staked, roughly 9.8p against 7.3p.

The survey gives the headcount. In the four weeks before they answered, 4.4 per cent of adults had bet on live horse racing, online or in person, compared with 6.0 per cent for live football. The money follows the same order. Online, racing yields more than any sport except football, which brought in £1.17bn in 2025-26.

None of these totals says anything about a single race. A Betting Kingdom piece on what racing results reveal beyond the winner, published on 2 November, points out that a race time tells a reader more once it’s set against the distance and the state of the ground, and it warns against treating a horse’s past pattern as a prediction of its next result.

Ukie’s £8.76bn and the Commission’s £8.3bn measure different things

Video games are the other half of the phrase, and the Gambling Commission doesn’t count them. Ukie released its valuation for 2025 at the London Games Festival in April 2026. Consumers spent £8.76bn on games, 7.4 per cent more than in 2024 and the highest figure Ukie has recorded.

Software took £6.03bn of that and hardware £2.17bn, with another £566m from what Ukie calls game culture, such as games-related film and television. Phones are a large slice without being the largest. Ukie’s 2025 market valuation puts mobile games at £2.07bn, up 7.9 per cent and just under a quarter of the total, behind £2.49bn of digital spending on consoles, up 9.2 per cent. PC downloads added £1.15bn.

Merchandise made up most of the game culture line, at £333m, and film and television added £159m. A Minecraft Movie took £56.8m of that at the UK box office, which Ukie says made it the highest-earning video game film in British cinema history.

The Commission’s figure for online casino, betting and bingo in 2025-26 was £8.3bn, close enough to Ukie’s total to tempt anyone into adding the two together. They don’t belong in one sum. Ukie counts what consumers spent on games, hardware and the merchandise and screen content around them. Gross gambling yield counts what gamblers lost, stakes minus winnings, and the Commission works to a financial year while Ukie uses the calendar year.

The Commission’s statistics calendar puts its next two releases on 3 December. The industry statistics for April to June 2026 will show whether online casino yield kept climbing into the summer. Wave two of the 2026 survey covers the same three months, and it will give a fresh count of how many adults gambled over that stretch.