Tennis betting odds in 2026 — the price behind the price

Updated October 2026

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A betting price on tennis looks like a fact. It is not. Every decimal you see already contains the bookmaker’s commission, the operator’s view of who is more likely to win, and a buffer for the moments when the market has to be moved. A £10 stake at 1.91 does not pay £19.10 on a fair market; it pays £19.10 minus whatever margin the operator chose to load onto that match. Knowing what an odds figure carries is the difference between reading a price and being sold one, and that is the subject this page is built around.

The data below was verified against the Gambling Commission’s public register and each operator’s own terms as of 27 October 2026.

The legal floor: who may take your tennis bet in Great Britain

A bookmaker serving customers in Great Britain needs a Gambling Commission licence wherever it is based. That is the single test set by the Gambling (Licensing and Advertising) Act 2014, which amended sections 33 and 36 of the Gambling Act 2005: an offshore licence, a Curaçao authorisation, a Maltese permit or a Gibraltar registration is not enough on its own, because the duty to hold a GB licence falls on the operator that takes the bet from a British customer, not on the operator’s home regulator.

There is no statutory list of permitted sports or markets. The Commission’s Licence Conditions and Codes of Practice (LCCP) sets the rules around how bets are offered — the controls on in-play pricing, the requirements around marketing, the customer-protection duties — but does not name which events may be priced. A licensed bookmaker is free to price Wimbledon finals, ITF $10,000s in Tunisia and Challenger qualifying rounds; the price it sets is its own business, and the only external check is whether the licence-holder keeps to the LCCP. Northern Ireland is outside the 2005 Act and runs its own older law, so a “GB licence” is not the same thing as a UK-wide authorisation and a brand licensed for England, Scotland and Wales is not automatically licensed for Belfast.

The Commission’s public register can be searched by business name, trading name, domain or account number, and is the whole test of whether a brand holds a licence. There is no state monopoly, no cap on the number of licences and no scarcity to advertise. The operators reviewed below are listed because they appear on that register against a remote general betting standard (real events) category, and several trade names are run by the same licence-holder (Betfair and Paddy Power under PPB Counterparty Services, for example, or BetUK under LeoVegas Gaming PLC). The bare fact of being on the register does not make a brand a good one; it makes it a legal one.

Safer gambling: what the licence actually buys the punter

A GB licence is not a quality mark. It is a floor. The protections it carries are real but limited, and they work because the regulator can fine a licence-holder, suspend a category or revoke an account number — never because they insure the punter’s stake.

GAMSTOP is the national multi-operator online self-exclusion scheme and is a mandatory licence condition for every online operator. Self-exclusion periods run six months, one year, five years, or five years with auto-renewal; after the minimum period the exclusion stays in place for a further seven years unless the customer asks GAMSTOP to remove it. GAMSTOP covers online sites and apps; the high-street betting shops run a separate scheme. Identity verification before the first deposit is the rule that gives GAMSTOP its bite: name, address and date of birth are checked before a customer can deposit or gamble, including with a free bet or bonus. Anonymous play at a licensed site is not on offer.

A financial vulnerability check (LCCP condition 3.4.4) has been in force since 30 August 2024 and applies once a customer’s deposits minus withdrawals exceed £150 in a rolling 30 days (since 28 February 2025). It is a public-record check — bankruptcy, county court judgments, the kind of record anyone can read — not an income check, not a credit-reference check, and not a salary disclosure. The wider “affordability checks” that appear in the press are a separate track of financial risk assessments under a Commission plan of 7 July 2026: announced, staged, no start date. Do not write either of these as “in force” beyond the dates above.

Deposit limits sit on the customer. Operators must offer a gross deposit limit on a fixed time frame under RTS 12, and the first phase has applied since 31 October 2025, with a second phase postponed to 30 September 2026. There is no state-set deposit or loss ceiling, and the question of whether a punt on Daniil Medvedev to win a Challenger is over any such limit is one only the customer can answer. Help is real and free: GamCare runs the National Gambling Helpline, GambleAware funds treatment, the NHS runs gambling clinics, and Gamblers Anonymous runs meetings. The number for the helpline is on the Commission’s site; the link is on every operator’s safer-gambling page; neither is a substitute for using it.

Credit cards are banned for gambling in Great Britain since 14 April 2020 (LCCP condition 6.1.2), and that ban covers credit-card-funded payments through an e-wallet. Debit cards and bank-based payments are not covered by the rule. The minimum age is 18 and verification is the rule, not the exception.

Crypto, e-wallets and the question of anonymity

A licensed tennis bookmaker in 2026 takes debit cards, bank transfers and a long list of e-wallets. What it does not offer is anonymity. Identity verification sits in front of the first deposit: the punter’s name, address and date of birth are checked before money moves, and source-of-funds questions at higher spend are routine under the money-laundering rules.

Cryptocurrency is a different question. Bitcoin and other coins arrive with a public ledger and a private key, and that combination is what makes them attractive to bettors who do not want their betting visible on a bank statement. Whether any GB-licensed tennis bookmaker takes crypto deposits at present is not established by the public register: payment methods are an operator-level question, and the register says nothing about them. What the licence does say is that any deposit the operator accepts is covered by the same source-of-funds regime, and an e-wallet funded by a crypto sale is no exception. A Bitcoin deposit that arrives via an exchange is a payment the bookmaker can see, and the licence-holder’s anti-money-laundering duties apply regardless of the rail.

The honest framing is short. Licensed tennis betting in 2026 means the bookmaker knows who you are before you place a bet, regardless of how the money arrives. That is not a marketing claim; it is the architecture the regulator requires.

Bonuses and free bets: what the headline number costs

The promotion rules in force since 19 January 2026 cap wagering requirements on bonuses at 10x — a £10 bonus at 50x needed £500 of bets before the cap, and under the cap no more than £100 is required to clear it. Mixed-product promotions, the “bet on the tennis to get free spins” shape, are banned outright. Whether the cap applies to free bets with no wagering condition, and whether there is any cap on the money value of a bonus, are not established. Never print a promo code, and never describe an offer by anything other than the operator’s own statement of it.

Free bets are the most common shape on tennis. Their economics are simple and routinely glossed over: a free bet is a fixed-price token whose stake is usually not returned with a win. The value of a £10 free bet at decimal odds of 1.91 is the free-bet amount times (odds minus one) divided by the odds times the market’s payout share — about £4.55 on a market paying 95% back, give or take the price the bettor picks. Read that as an average over many bets, not a guaranteed return, and read the headline “free £30” as the maximum the bettor will receive, not the amount the bettor will keep.

Cash bonuses carry a turnover condition. The required turnover is the bonus base multiplied by the wagering factor the operator states — the bonus alone, or the bonus plus the deposit — and the number of bets needed is turnover divided by the stake per bet, with only bets at or above the minimum price counting. A £30 cash bonus with a 5x wagering factor on the bonus alone means £150 of qualifying bets at minimum price, and a £30 cash bonus with a 5x factor on bonus plus deposit (so on a £60 base) means £300. The first is a free week of small-stake tennis; the second is a fortnight at the same stake. The headline never tells you which one you are taking.

The “risk-free” offer is the one to read most carefully. A refund on a losing bet paid as a free bet — not as cash — is not a refund. It is a free bet the punter would not otherwise have, and its value is the free-bet calculation above, applied to the price at which the free bet is used. A “best odds guaranteed” offer (QuinnBet’s, for example) is a different thing: it pays out at the higher of the price taken and the starting price, and on Irish and UK horse racing from 10:00am daily, the cap is £150 per customer per race. Tennis does not run under a starting-price regime in the same way, so the price-boost mechanics on tennis sit separately under each operator’s daily boosts.

A cap on free-bet winnings is the second number to find before claiming. Many operators cap the winnings of a free-bet token at a multiple of the free-bet amount, and that cap is independent of the price on the bet. A free bet that wins £500 looks like £500 of value; a free bet that is capped at £50 in winnings is £50 of value regardless of the odds.

Mobile and apps: where the price actually lives

Most tennis bets in Great Britain are placed on a phone. The app is the price, the market, the cash-out and the bet builder, and the differences between operators are mostly differences in app design rather than in licence or market list.

Apple Pay, Google Pay and the operator’s own e-wallets cover deposits. Bank transfers and debit cards cover withdrawals. The minimum deposit on a tennis bookmaker tends to sit at £5 to £10 — DAZN Bet’s £5 minimum by debit card, Apple Pay, Paysafecard, Trustly or Skrill is at the lower end, and the £20 minimum on PayPal at the same operator is on the higher side. Withdrawal times vary by method and operator, and the fastest path is usually the e-wallet you deposited with.

The features that matter for tennis are the same on every app and rarely priced separately. A bet builder combines markets from one match into a single bet (bet365’s Bet Builder+ is the named version, and 888sport’s Bet Builder is a similar feature); a price boost raises the odds on a named selection for a stake limit; a cash-out settles the bet before the match ends, and may be partial or full depending on the operator. Spreadex combines fixed-odds and spread betting in one app, with one-click, auto and partial cash out, Bet Builder across fixed odds or spreads, and live streaming of UK and Irish horse racing, greyhounds, tennis, NFL and selected football. bet365 adds Super Boosts and daily Bet Boosts on top of its Bet Builder+. Not every app carries every feature, and the betting slip is the honest summary: it tells the punter what the operator will take and what it will pay.

Live betting and cash out: pricing in the running match

In-play tennis is the largest live-betting market in British sportsbooks after football, and it is priced continuously through the match. The bookmaker’s edge on a live market is not smaller than on a pre-match market; if anything, it is larger, because the bookmaker has to absorb a more aggressive trader operation and price movement in real time. Cash out lets the punter settle the bet before the match ends — at a price the operator sets at that moment, which is not the same as the fair price and not the same as the price the bet was taken at. Partial cash out takes part of the stake out and leaves the rest running; full cash out closes the bet.

Spreadex’s one-click and auto cash out sit alongside its partial version. Betfair Sportsbook’s app carries in-play betting, Bet Builder, free live streaming of events such as UK and Irish horse racing and football, and a 90 Minute Payout market. 888sport’s app runs a live bet feed and daily boosted odds alongside its Bet Builder. None of these features are unique to tennis, and none of them change the margin the operator runs — they only change how the punter interacts with the price. A bettor who bets in-play on a set break is paying the operator for the privilege of betting on a worse price than the pre-match price, plus the cost of the cash-out haircut if the bet is settled early. The cost is real, and it is paid in the price.

Predictions and strategy: what an analysis can and cannot tell you

A tennis prediction is a probability estimate with a price tag. The estimate is the model — serve percentages, return depth, surface form, head-to-head — and the price is the odds the operator publishes, which carries its own margin. The gap between the two is the punter’s edge, and it is small on most markets and most days.

The strategy that pays is not a system. Bankroll discipline, line-shopping across operators and a willingness to pass on a match when no price looks fair are the three habits that distinguish a long-running punter from a short one. A staking plan — flat stakes, the Kelly criterion, a percentage of bank per bet — is a tool, not a guarantee. The free tip on social media is closer to marketing than analysis; treat it accordingly. None of this changes the outcome of a match, which is what the bookmaker’s margin sits between: the punter and the operator, both pricing the same event from different sides, with the margin always on the operator’s side.

Bet types and odds: how a tennis price is built

The match-winner market on a Grand Slam is the most heavily priced tennis market, and the prices tend to be tight. A two-way match at 1.91 / 1.91 is a fair illustration of what a heavily priced match looks like after the operator has loaded its margin. The arithmetic is worth seeing once:

• The payout share of a two-way market at 1.91 / 1.91 is one divided by (one over 1.91 plus one over 1.91) — about 95.5%, or a band of 95% to 96% depending on how the price is rounded.
• The margin is one minus that, or about 4.5% (give or take the rounding).

That margin is what the operator keeps of every unit bet on this market. On a market priced 1.80 / 1.80 the margin is heavier — about 11% — because the prices are shorter and the operator is taking more from each bet. On a market priced 2.20 / 1.65, where one player is a heavier favourite, the margin sits in a similar band because the operator is still loading both sides, just asymmetrically.

Set betting, game handicap, total games over/under and a player to win a set are all second-tier markets on the same match, with margins that run higher than the match-winner market. Live betting sits at the wider end of the range, both because the bookmaker has to move the price through the match and because the punter has to take what is offered at the moment. The spread between pre-match and in-play is itself a margin.

Handicaps and totals on tennis work as they do on any sport: the operator assigns a number of games or sets to one side, the punter takes the price, the bet settles on the result plus or minus the handicap. Asian handicap on tennis is a half-game or full-game line on the total games in the match; a -2.5 games handicap on the favourite pays out only if the favourite wins by three or more games. The same shape exists on sets and on individual sets. The handicap is a way of pricing a heavy favourite without offering a short price, and the margin is the same shape as on any other tennis market.

The tennis calendar: what is being priced

The four Grand Slams anchor the tennis year. The Australian Open (hard courts) opens the season in January, the French Open (red clay) runs from late May to early June, Wimbledon (grass) from late June to mid-July, and the US Open (hard courts) closes the season in late August and early September. Wimbledon 2026 was played from 29 June to 12 July 2026; Jannik Sinner beat Alexander Zverev in the men’s final and Linda Noskova beat Karolina Muchova in the women’s final.

Around the Slams sit the Masters 1000s (Indian Wells, Miami, Monte Carlo, Madrid, Rome, Canada, Cincinnati, Shanghai, Paris), the ATP 500s and 250s on the men’s side, and the WTA 1000s, 500s and 250s on the women’s side. Lower down the pyramid, the ATP Challenger tour and the ITF World Tennis Tour run year-round, with $15,000, $25,000, $60,000 and $100,000 events. The ITF is the highest governing body of tennis. Every event on the calendar is a market at a GB-licensed bookmaker; the question is only how many markets per match and how wide the margin.

A tennis game goes 0 (love), 15, 30, 40; the first to win at least four points with a lead of two takes the game, and a tie at 40-40 is deuce. A set is usually won by the first player to win six games by a margin of two; at 6-6 a tiebreak is played, first to seven points with a two-point lead. Matches are best of three or best of five sets; men play best of five only at the four Grand Slams, and women play best of three everywhere. A match tiebreak (super tiebreak) is sometimes played in place of a deciding set: first to ten points with a two-point lead. A bettor who doesn’t know the format cannot read the prices, because every set handicap and every total-games line is built on these rules.

The bookmakers: who holds a GB licence and what each one prices

Ten bookmakers carry a Gambling Commission remote licence for general betting on real events and run a tennis book. None of them is the only licensed brand; the register lists more, and a place in this list is not a recommendation. Each is reviewed on its own terms, and the comparison is on what the operator’s own pages state — licence number, offer shape, app feature and minimum deposit — rather than on a single winner. Where the public register and the operator’s own page disagree, the register is the test of licence status, and the operator’s own terms are the test of what the bettor pays.

London Bet — the small-stake tennis punter

London Bet operates under a Gambling Commission remote licence held by Thistle Bet Limited (Commission account 66162). The app combines sports betting — football, tennis, horse racing, greyhounds, darts, golf, cricket, NFL, NBA, MLB, snooker — with Pragmatic Play casino slots and live in-play betting. There is no headline welcome offer detailed in the public material for tennis bettors, and the punter who wants a cash bonus or a free-bet token will need to read the promotions page at the time of staking. The minimum deposit and the qualifying markets are not stated in the same source.

For the bettor with a small budget who wants tennis, football and a casino on one login, London Bet is the package. The lack of a sports welcome offer in the public material is a gap rather than a barrier, and the price on the tennis markets is the question to ask before staking.

QuinnBet — the best-odds punter on the British and Irish racing parallel

QuinnBet is licensed by the Gambling Commission under QuinnBet (Gibraltar) Limited (Commission account 61011). Its Best Odds Guaranteed applies to Irish and UK horse racing bets from 10:00am daily on singles, multiples and system bets, with a maximum benefit of £150 per customer per race. Tennis bettors are looking at the rest of the book, which includes a daily boost schedule and the standard in-play offering. QuinnBet does not run a sports welcome offer in the same shape as the racing book, and the punter who values BOG is a horse-racing punter first and a tennis punter second.

The price on a tennis match at QuinnBet is its own price, and the BOG concession does not transfer. The punter who places one racing accumulator a week and a tennis match on the side gets a useful parallel; the punter who only bets tennis gets nothing extra.

Betfair Sportsbook — the exchange-shaped sportsbook

Betfair Sportsbook’s Gambling Commission remote licence is held by PPB Counterparty Services Limited (Commission account 39439) — the same licence-holder as Paddy Power, which is why the two are never described as independent operators. The sportsbook offers in-play betting, Bet Builder, free live streaming of events such as UK and Irish horse racing and football within the app, and a 90 Minute Payout market. The exchange is a separate product, run on a betting intermediary licence, with its own back-and-lay mechanics and its own rates. Tennis markets on the sportsbook run alongside tennis markets on the exchange, and the price on the exchange is set by punters backing and laying, with the operator taking a commission on net winnings.

For a bettor who wants the exchange’s price and the sportsbook’s features on the same login, Betfair is the only place to get them. The exchange’s tennis liquidity is the deepest in the British market, and the sportsbook’s features sit on top. The cost is two interfaces to learn and the discipline of treating the sportsbook price and the exchange price as two different products.

Star Sports — the trader-on-the-phone bookmaker

Star Racing Limited holds the Gambling Commission remote licence for Star Sports (Commission account 9177). The app lets customers speak to a trader directly on 08000 521 321 to open an account, place bets or ask customer queries, and support also runs at [email protected]. The price on the tennis markets is set by traders rather than by an algorithm, and that is the reason a high-stakes punter picks up the phone rather than tapping the screen.

For a bettor who wants to talk to the person setting the price, Star Sports is the only option on this list. The cost is the discipline of asking rather than clicking, and the smaller market depth than the algorithmic books.

BetUK — the four-free-bets welcome

BetUK’s Gambling Commission remote licence is held by LeoVegas Gaming PLC (Commission account 39198). The sports welcome offer for new customers is four £10 free bets — two football accumulators of 4+ selections and two multiples of 2+ — when a £10 bet is placed within 7 days of registering, valid for 7 days, with opt-in required. The free bets are stake-not-returned, and the qualifying bet has its own minimum price.

The welcome shape is football-weighted, and the tennis bettor who wants to clear it is hedging a football accumulator. The £40 of free bets is the headline; the £10 qualifying bet at minimum price is the cost. For the bettor who already bets football accumulators, the offer is free money; for the bettor who bets only tennis, it is a reason to place a football bet they would not otherwise have placed.

BoyleSports — the £20 free-bet welcome

BoyleSports operates under a Gambling Commission remote licence held by Boylesports Enterprise (Commission account 39469). The sports welcome offer for UK players is £20 in free bets when a £10 bet is placed (€30 in free bets for a €10 bet for Irish players). The free bets are stake-not-returned, and the offer sits alongside the racing and the in-play books.

The headline is a £20 free bet for a £10 qualifying bet. The cost is the £10 qualifying stake and the turnover on the free bet at minimum price. For the bettor who already bets BoyleSports, it is a useful top-up; for the bettor who is choosing a new bookmaker on the welcome alone, it is the same shape as every other £20 free-bet welcome.

888sport — the in-play and bet-builder bookmaker

888 UK Limited holds the Gambling Commission remote licence for 888sport (Commission account 39028). The app offers pre-match and in-play betting, Cash Out, Bet Builder, racing streams, BetFinder form tools, a live bet feed and daily boosted odds. The welcome offer and the tennis market depth are not detailed in the public material for this review, and the punter who wants a complete picture should read the promotions page at the time of staking.

For a bettor who wants Cash Out, a Bet Builder, racing streams and a daily boosted-odds feed on one app, 888sport is a package. The tennis price is the question to ask before staking, and the in-play margin is wider than the pre-match margin on every bookmaker.

Spreadex — the fixed-odds-and-spread bookmaker

Spreadex runs on a Gambling Commission remote licence held by Spreadex Limited (Commission account 8835). The company is regulated by the FCA for spread betting and by the Gambling Commission for fixed-odds betting, and spread betting losses can exceed the deposit — the FCA-regulated side is a separate product with separate risk. The app combines fixed-odds and spread betting in one interface, with one-click, auto and partial cash out, Bet Builder across fixed odds or spreads, and live streaming of UK and Irish horse racing, greyhounds, tennis, NFL and selected football.

For a bettor who wants fixed odds and spread betting on one app, Spreadex is the only option on this list. The cost is the discipline of reading the spread-bet terms carefully, because a spread bet that loses can cost more than the deposit, and the FCA-regulated losses are not protected by the same consumer-credit rules as a fixed-odds loss.

DAZN Bet — the £5-minimum-deposit bookmaker

DAZN Bet runs on a Gambling Commission remote licence held by DZBT Limited (Commission account 48756). Deposits start at £5 by debit card, Apple Pay, Paysafecard, Trustly and Skrill, and at £20 by PayPal, with no processing fees. The minimum deposit is the lowest on this list, and the punter who wants to stake a fiver and walk away gets that option.

For a bettor with a small budget who wants a low minimum deposit and a wide payment-method list, DAZN Bet is the package. The tennis price and the welcome offer are the next questions to ask before staking.

NetBet — the daily-boost bookmaker

NetBet Sport runs on a Gambling Commission remote licence held by Netbet Enterprises Limited (Commission account 39170). The app offers Daily Boosts, Profit Boosts and free bet offers, a Bet Builder with instant dynamic odds, and sports stats for major leagues. The welcome offer is not detailed in the public material for this review.

For a bettor who wants daily boosts and a bet builder with dynamic odds, NetBet is the package. The tennis price and the welcome offer are the next questions to ask before staking.

The landscape at a glance

Every row in the table above is a brand whose licence is held by a single legal entity, and a single licence-holder may run several trading names. Betfair and Paddy Power share a holder; BetUK sits under LeoVegas Gaming PLC. The Commission’s public register is the place to verify the licence number and the holder against any of the trading names above.

The pricing picture: what the page carries

A tennis price on a GB-licensed bookmaker in 2026 carries a margin of around 4% to 6% on the heaviest-priced match-winner markets, with the wider end of the band sitting on second-tier markets (set betting, game handicap, totals) and on live betting. The price is set by traders or by algorithms, and the algorithm is the operator’s own; the cost the punter pays is the same shape regardless of the method.

The illustration in the calculation above — a two-way match at 1.91 / 1.91 — gives a payout share of about 95.5% and a margin of about 4.5%, with a band of 95% to 96% on the payout share and 4% to 5% on the margin. Heavily priced favourites at 1.20 / 4.50 carry a wider margin (around 8% to 10%) because the operator is loading more onto the short side, and the punter pays that margin as a hidden commission on the stake.

The promotion rules cap the wagering on a cash bonus at 10x, and that cap is the ceiling on the cost of clearing a bonus at a GB-licensed bookmaker. The free bet, the cash bonus and the price boost are the three shapes to read carefully, and each carries its own cost in turnover, in minimum price and in cap on winnings. The 10x cap is the regulatory floor; the offer on the page is the operator’s own.

What to do with the page

The bookmakers above are reviewed as operators on a GB licence, and the comparison is on what their own terms state. Tennis bettors who want a price-shop routine should compare two or three operators on the same match before staking, because the margin difference between 4% and 6% is the difference between losing £4 and losing £6 on a £100 stake over the long run. The welcome offer is a one-time shape; the price is the long-run shape. The free-bet economics apply on every free bet, every time.

The licence number is on the register, the offer is on the operator’s page, the price is on the betting slip, and the cost is the margin between the price and the fair price. None of these are secrets; all of them are read by reading the page in front of you.

Frequently asked questions on tennis betting odds in 2026

What is a draw no bet in tennis?

Draw no bet is a market on the two-way match-winner line where the stake is returned if the match finishes level. In tennis that means a match that ends 1-1 in sets after a best-of-three, or 2-2 after a best-of-five at a Grand Slam before the deciding set is finished — a situation that is rarer in tennis than in football because the deciding set is played. Draw no bet on tennis is offered by some bookmakers as a way to take the deciding-set risk off the punter, and the price is shorter than the match-winner price because the operator is taking less risk. Read the operator’s settlement rules before staking, because the definition of a “deciding set” varies.

What is an Asian handicap in tennis betting?

An Asian handicap on tennis is a half-game or full-game line applied to the total games in the match, with the punter taking either side of the line at the price offered. A -2.5 games handicap on the favourite pays out only if the favourite wins by three or more games in the match; a +2.5 games handicap on the underdog pays out if the underdog wins or loses by fewer than three games. Half-game lines remove the push (the stake-refund outcome) by making every result a win or a loss; full-game lines can push. The margin on an Asian handicap on tennis sits in the band of the second-tier markets, wider than the match-winner market.

What is double chance in tennis betting?

Double chance is a market on a tennis match that lets the punter take two of the possible outcomes in one bet. The standard shape is home win or away win, or home win or draw, or away win or draw, with three combinations priced. In tennis the “draw” outcome is the rare case where a match is retired or abandoned before completion, and the double chance shape is used by bookmakers who want to cover a punt on a retirement-prone player. The price is shorter than the single-outcome price because the operator is taking on two outcomes, and the cost sits in the margin.

How can it be checked that a bookmaker holds a Gambling Commission licence?

The Commission’s public register can be searched by business name, trading name, domain or licence number, and is the whole test of whether a brand holds a licence. Search by the licence number or the trading name; the register returns the licence-holder, the categories, the licence status and any conditions. A licence number starting with a “0” and ending with “-R-” is a remote licence for real events; a licence in a different shape is a different category. The register is updated by the Commission, not by the operator, and a brand that claims a licence number which does not return on the register is not licensed. Domain extension proves nothing — a GB-licensed operator may use .com or .co.uk interchangeably.

How is the return on a bet worked out from the stake and the odds?

The return on a winning single bet at decimal odds is the stake multiplied by the odds. A £10 stake at 1.91 returns £19.10, which is the £10 stake plus £9.10 of profit. For a combination bet the odds of the legs multiply into one price — two legs at 1.91 and 1.91 give a combined price of 3.65, and a £10 stake returns £36.50. The profit on a winning combination bet is the return minus the stake. British bookmakers also publish fractional odds (5/1, 11/4, evens), and the conversion from fractional a/b to decimal is a divided by b plus one; 5/1 becomes 6.00 and 11/4 becomes 3.75. Fractional odds describe the profit, not the return — a £10 stake at 5/1 returns £60 (£50 profit plus £10 stake).

What is the bookmaker’s margin and how can it be seen in the odds?

The bookmaker’s margin is the share of every unit bet on a market that the operator keeps, on average, across all outcomes. It is the difference between the payout share (the proportion of every unit bet that the market returns to punters on a fair result) and 100%. On a two-way market at 1.91 / 1.91, the payout share is one divided by (one over 1.91 plus one over 1.91) — about 95.5% — and the margin is one minus that, or about 4.5%. On a market priced 1.80 / 1.80 the margin is heavier, around 11%, because the prices are shorter and the operator takes more from each bet. The margin is the operator’s commission, paid by the punter on every stake, and the wider the margin the more the punter loses over the long run on a market with no edge.

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