Ante-post betting explained: how future-race bets work and what they cost the bettor

Updated October 2026

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Ante-post betting takes its name from the fact that the bet is placed well before a race or sporting event — sometimes weeks, often months. In British racing the term is almost a synonym for the future-racing market itself: open the market on the Grand National the morning after the previous year’s running, and every price a punter sees from then until the final declarations is an ante-post price. The appeal is straightforward. The earlier the bet, the bigger the price, because bookmakers are pricing something with very little information about the eventual field. The cost is also straightforward and far less discussed: a horse that does not run when the race comes round is not refunded the way it would be in a normal market, and a bookmaker rules the whole category in a way that asks the bettor to carry more risk than a day-of-race wager does. This page looks at ante-post the way the bettor pays for it — the price of the bet, what it pays back when it wins, what Rule 4 does to a winning return, and where it leaves a stake when a horse never gets to the starting stalls.

Current as of 27 October 2026 · verified against the Gambling Commission’s public register and each operator’s own terms page.

How Great Britain regulates an ante-post market

Ante-post is not its own legal category. The Gambling Act 2005 sets the framework for all commercial betting in Great Britain; the Gambling Commission (UKGC), a non-departmental public body sponsored by the Department for Culture, Media and Sport, issues licences under it. A bookmaker offering ante-post prices holds one of the Commission’s remote licences — most commonly the remote general betting standard (real events) licence — and offers the market under its own house rules as permitted by the Licence Conditions and Codes of Practice. Northern Ireland runs under its own older law, so this page treats “Great Britain” or “GB-licensed” as the regulator’s term. There is no statutory list of permitted bets: an operator’s licence authorises the category, and the markets within it are the operator’s call.

A point that catches out anyone new to the field: a single licensee often runs several brands. Hillside (UK Sports) ENC operates bet365. LeoVegas Gaming PLC operates BetMGM’s UK site. Blue Star Planet Limited operates 10bet. GB Sports Advisors Limited operates Geoff Banks. A Commission search by name, trading name, domain or account number returns the licensee, not the brand. The Commission’s public register is the only test of who holds a licence and what category they hold it for, and it can be checked in seconds. The Commission does not license advertising, which is policed by the Advertising Standards Authority through the CAP Code (non-broadcast) and the BCAP Code (broadcast).

A bookmaker’s licence covers its betting activity, not its tax affairs. The duty on a betting operator’s gross profits is General Betting Duty, currently 15% for most products — including spread betting at 3% on financial contracts and 10% otherwise. A second remote-gambling rate of 25% has been announced and applies from 1 April 2027, leaving UK horse-racing remote bets, self-terminal bets, pool betting and in-person bets at 15%. That is the operator’s tax, not the player’s; betting winnings are untaxed in Great Britain for private bettors. General information, not tax advice.

Safeguards a licensed operator is required to provide

A Gambling Commission licence comes with obligations that shape the day-to-day experience of a bettor, and several of them are worth naming before a stake is placed. Minimum age is 18, and since 7 May 2019 every licensed operator must verify the customer’s name, address and date of birth before a deposit or a bet — including when the bet is paid for with a free bet. Anonymous play at a licensed site is not the case.

GAMSTOP, the national multi-operator online self-exclusion scheme, has been a mandatory licence condition for online operators since 31 March 2020. Self-exclusion runs for six months, one year, five years, or five years with auto-renewal, and after the minimum period the exclusion remains in place for a further seven years unless the customer asks GAMSTOP to remove it. GAMSTOP covers online sites and apps; betting shops use a separate service. Betting shops aside, GAMSTOP is the single most effective opt-out a bettor in Great Britain can set: one registration closes hundreds of accounts at once.

A separate financial vulnerability check applies under LCCP condition 3.4.4, in force since 30 August 2024, for remote betting when a customer’s deposits minus withdrawals cross £150 in any rolling 30 days (in force since 28 February 2025). It is a public-record check — bankruptcies, county court judgments and the like — not an income check and not a credit-reference check. The heavier financial risk assessments commonly called “affordability checks” are announced, staged and have no start date. The Commission has not set a state-imposed deposit or loss ceiling; the deposit limits operators offer are the customer’s choice, drawn from the Remote Technical Standards (RTS 12) framework, with the first phase live since 31 October 2025 and a second phase due on 30 September 2026.

Help lines a bettor can reach without registering anywhere: GamCare runs the National Gambling Helpline, GambleAware publishes information on treatment and self-exclusion, the NHS runs regional gambling clinics, and Gamblers Anonymous runs local meetings. A bettor who wants a break does not need to wait for a limit prompt to ask for one.

Tipsters, forecasts and the trap of “guaranteed” ante-post tips

The “predictions” market around ante-post betting is loud. Tipsters publish lists, YouTube channels publish rankings, syndicated columns syndicate the lists they have already published, and every Cheltenham, Royal Ascot and Grand National cycle produces a fresh wave of “ante-post tips” and “ante-post picks”. The appeal is obvious: the price is far better a year out than a week out, so a tip that lands early pays a multiple of what the same selection would return on the morning of the race. The arithmetic underneath is finer than it looks, and most of what is sold as a tip is recycled information dressed as analysis.

A tip is, at best, an opinion priced into a market. The price a punter sees in front of them has been set by a bookmaker who has read the same form book and talked to the same owners and trainers — and the bookmaker has the advantage of taking the other side of every bet. A tip that names a horse at 25/1 is, mechanically, the same horse the bookmaker has priced at 25/1 because that is what the bookmaker expects to be a profitable lay over the season. Tips that consistently beat the market are exceptional, and the people who run them tend to know they are exceptional and tend to keep quiet about it. The publicly available tipster industry is a marketing channel, not a research channel.

That said, a bettor can extract real value from ante-post if they understand what the bet actually is. Three working uses: first, to back a horse at a price that is plainly out of line with its course-and-distance form — a price that looks generous because the field is undeclared and the bookmaker is wide; second, to lock in a position against a horse whose price will shorten once connections declare their intentions; third, to back selections that will later be used in a multiple bet, with the higher ante-post price cushioning the leg structure. None of these uses “guarantees” anything. They are strategies that price in risk rather than expecting to escape it.

The deeper tactic is bankroll discipline: stake a fixed unit, never chase a loss with an ante-post double, and keep a written record of ante-post bets settled at SP (starting price) so the real return can be compared to the price at which the bet was placed. The discipline matters because ante-post betting punishes the bettor who treats it as a casual punt — the non-runner rule is unforgiving, and a season of losing non-runners is a season of stake gone.

What an ante-post bet actually is: bet types, prices and settlement

Ante-post covers two distinct kinds of wager. The classic is a single bet on a future event at a price taken well in advance — the trainer’s horse at 20/1 for the Grand National, the favourite at 5/2 for the Champion Hurdle. The second is an ante-post accumulator (sometimes called a future-racing accumulator), where each leg is taken at its ante-post price, the prices multiply into one another, and the bet is paid out only when every leg has actually run. Both pay at the price at which the bet was placed, not at SP; this is the rule that makes ante-post attractive on a long-priced selection that shortens sharply, and that makes it expensive on a long-priced selection that drifts.

Some bet types are not available ante-post. Bookmakers do not accept place-only, conditional or forecast bets on ante-post markets, and bets settle at the price taken at the time of placement, not at the price on offer at the start. The single hardest rule for first-time ante-post bettors is the non-runner rule: in non-ante-post betting, a selection that does not run usually voids the bet and returns the stake. In ante-post betting, unless the bookmaker’s terms explicitly say otherwise, a horse that does not run loses the bet. The stake is not refunded. There is no “void” button on an ante-post non-runner; the bet is settled as a loser. That is the central cost of the format, and it is the reason a tip at 25/1 six months out is not really a tip at 25/1 six months out.

Rule 4 (a bookmaker rule, not a statute) works the same way ante-post or otherwise: when a horse is withdrawn from a race after the betting has begun, a deduction is applied to the returns of any winning bet that did not include the withdrawn horse. The deduction is a p-per-£ figure published in the bookmaker’s terms — typically between 5p and 45p in the pound — and the formula reduces the gross return proportionally. An ante-post bet is just as exposed to Rule 4 as a day-of-race bet, so the difference is not whether Rule 4 applies (it does) but whether a particular bookmaker enforces it on future-racing markets. Most do; some specify a different schedule. Rule 4 is an industry rule, and reading the bookmaker’s own Rule 4 table is the only honest answer to “what will my winning ante-post bet pay after a withdrawal?”

A price boost offered by a UK bookmaker on a future-racing selection is normally a token mechanism rather than a margin improvement. A “best odds guaranteed” concession, which pays the higher of the price taken and SP if the price drifts shorter on race day, does not apply to ante-post on most major operators — William Hill, for instance, restricts its Best Odds Guaranteed offer to UK and Irish racing from 8 am on the day of the race, both singles and multiples, and explicitly excludes ante-post, tote and pari-mutuel bets. A bettor who expects BOG to fire on an ante-post bet is, in the most common case, expecting something the offer does not cover.

Reading an ante-post price

Fractional odds are the British default. A price of 20/1 means a £1 stake returns £20 in profit and £21 with the stake back. Decimal odds express the same return as a single multiple (21.00 for 20/1). Conversion is a/b → a÷b+1, so 5/2 becomes 3.50, 11/4 becomes 3.75, evens (1/1) becomes 2.00. A “shorter” price means a smaller return; odds-on (anything shorter than evens) means a return smaller than 2x the stake. As a price shortens, the bookmaker’s margin typically widens — a 5/2 shot carries less margin than a 25/1 longshot, because more bets cluster on the favourite and the market reaches an efficient price faster.

What non-runner and abandonment do to a bet

Three scenarios a bettor should know cold. First, a horse that does not run in an ante-post single: the bet loses, the stake is gone. Second, a horse that is balloted out or eliminated from an ante-post accumulator: the bet runs on the remaining legs at their original prices (a treble becomes a double, a double becomes a single), and a single ante-post bet on that horse is void. Third, an abandoned race or a race moved to a different track: the ante-post bet is void regardless of when it was placed. The bettor’s only safety on an ante-post accumulator is the leg-reduction rule; the bettor’s only safety on an ante-post single is the void-on-abandonment rule. There is no safety on a non-runner.

How an ante-post bet moves from selection to payout

A bettor who has never placed an ante-post bet sees the format as exotic. In practice it is a standard betting-slip flow run earlier in the cycle. Six steps, no mystery.

Step one — selection. The bettor opens the bookmaker’s “future racing” or “ante-post” tab, normally several months before the event. For Cheltenham and Aintree, the major bookmakers go live on those markets the morning after the previous year’s running; for the Grand National, the market is sometimes open a full twelve months out.

Step two — price and stake. The price shown is the price the bet will be paid at, with no SP comparison and no BOG safety net. Stake is set at the betting slip; the slip will not apply any rule for place terms or each-way unless the bettor actively toggles them, and place-only / forecast / conditional bets are declined.

Step three — confirmation. The slip confirms the price, the stake and the bet type. Some bookmakers print a “non-runner money lost” line on the slip itself. A bettor who has not seen the disclaimer before clicking has missed the only warning it comes with.

Step four — settlement on race day. If every leg of the bet runs and wins, the bet settles at the price taken, not at SP. The bookmaker credits the stake plus profit, normally within minutes of the race result; some settle manually for a few minutes while they confirm the result, and a small number of operators settle next-day.

Step five — settlement on non-runner. If a horse is balloted out of an ante-post accumulator, the leg drops and the bet continues on the rest at original prices. If the horse is balloted out of an ante-post single, the bet is void — no win, no loss, stake returned.

Step six — settlement on abandonment or track change. The bet is void in full; stake returned across the entire bet including any unaffected legs. The exception is a race that goes ahead at a different track to the one named in the market name; even if the same horses run, the bet is void because the bettor’s wager was on a race at a named venue.

The bookmaker’s house rules sit on top of these steps. A bookmaker that excludes forecasts on future-racing markets is not being unfriendly; it is following the industry default. A bookmaker that applies Rule 4 to ante-post on a withdrawal from the field is doing what every major operator does. The bettor who has not read the rules before clicking confirm is the bettor who absorbs the loss.

Ante-post cost on the page: what a licence costs, what a market keeps

The arithmetic underpinning a price is the bit of ante-post betting that turns a tip into either a value bet or a punt. Two things are worth holding onto while looking at a market: the price and the bookmaker’s margin. The price is what a winning bet pays; the margin is what the bookmaker keeps regardless of the result. A 5/2 shot carries less margin than a 20/1 longshot, because longer prices give the bookmaker more room to overround. A market where the bookmaker runs a 20% margin is a market where the bettor pays £0.20 of every £1.00 wagered for the privilege of taking part, and only the prices that beat the margin by enough to clear the bookmaker’s overround return a profit in the long run.

The prescribed arithmetic for this page is the margin on an illustrative two-way market priced at 1.90 / 1.90 in decimal odds (about 9/10 in fractional). The payout share is the implied probability of every outcome summed: 1 ÷ (1 ÷ 1.90 + 1 ÷ 1.90) = 1 ÷ (0.5263 + 0.5263) = 1 ÷ 1.0526 ≈ 0.95, so the bettor receives roughly 95p of every £1 wagered back across the long run and the margin is about 5%. A 5/6 market at 1.71 / 2.20 would carry a margin of about 4.6%; the 2.50 / 1.50 favourite/longshot pair carries about 4%. A market priced at evens the whole way round (2.00 / 2.00) is a market the bookmaker runs at zero margin — and in practice a bookmaker never does this on a real ante-post race. The realistic ante-post margin on a major race hovers in the 5–12% range; the realistic margin on a small-field handicap or a jump bumper with thin liquidity can climb to 18–22%. A bettor who knows the margin of the market they are betting in knows the size of the fee they are paying before they place a stake.

The honest reading of the math: an ante-post bet of £10 at 20/1 on a horse that wins pays £200 in profit and £210 returned. The same bet placed at SP on the day of the race — and assume SP settles at 10/1 — would have paid £100 profit if the horse had not drifted. The difference is real, and it is the bettor’s reward for carrying the non-runner risk. The bettor who accepts that extra risk is, over a season, paying for the chance to take prices that may or may not exist on the day; the bettor who does not accept it is paying nothing extra and is buying no upside. Both are rational positions, and the right one depends on whether the bettor has an opinion on the eventual non-runner rate of the horses they are following.

Ten licensed bookmakers reviewed for ante-post betting in Great Britain

Ten operators hold a Gambling Commission remote licence for real-event general betting and offer ante-post markets under it. The licence details and the ante-post terms carried by each operator’s own material are below. Every name on this list takes part in GAMSTOP and, where the operator’s own page names it, verifies identity before the first deposit. The table below summarises the audit trail; the operator notes after the table unpack what each bookmaker’s own terms say about ante-post.

Fitzdares (account 400)

Fitzdares markets itself as a premium racing bookmaker and lists ante-post markets on horse racing, football, tennis, rugby, cricket, golf and American football — a wider rugby and golf presence than the average racing-led book. The Fitzdares app offers cash out, accumulators, Lucky 15s, specials and in-play live odds as well. For ante-post purposes the depth matters most on British and Irish horse racing, where the firm runs a long future-racing book from the morning after the previous meeting.

Worth it for the bettor who wants one brand for ante-post horse racing and ante-post golf, with a deep rugby selection beside it. While the live offering is broad, it is less granular than the major exchanges, and the single-licence structure means there is less redundancy than the large multi-brand groups provide.

Tote (account 54779)

Tote is the pool-betting brand reborn as a fixed-odds and pool offering under TDCO Limited. Ante-post on the Tote book runs where a fixed-odds pool has been priced, not on every race in the calendar, so the depth varies with the race type. Tote’s USP is the pool product itself — the dividend is not known at the time of the bet — and that is a different format from a fixed-odds ante-post single.

Worth it for the bettor who wants exposure to pool dividends on ante-post racing and to compare a pool payout against a fixed-odds book. The format is not a one-for-one substitute for a fixed-odds accumulator, and a bettor who knows only fixed-odds pricing will need to read the pool rules before clicking.

Geoff Banks (account 54095)

GB Sports Advisors Limited runs the Geoff Banks app and the firm’s online channel. Ante-post prices on future events are offered alongside live in-play prices, which is the position most racing-led apps now take: the future book opens early, the in-play book takes over within 24 hours of the race, and the ante-post market closes once declarations are confirmed. Geoff Banks is a smaller licensee than the major houses and is closer to a curated racing book than a full-service sportsbook.

Worth it for the bettor who wants a smaller bookmaker with named contactability and a UK racing focus. However, the football ante-post book is light — Geoff Banks focuses on racing, and that priority dictates the depth of the football market.

Lottoland (account 38991)

EU Lotto Limited runs Lottoland UK with casino, lottery betting, scratchcards and a sportsbook. Ante-post markets on the sportsbook are limited to the categories Lottoland chooses to price — football ante-post is more developed than horse racing ante-post on this site. Lottoland’s identity verification policy is the standard Commission one: name, address and date of birth before the first deposit.

Worth it for the bettor whose primary product is lottery betting or scratchcards and who wants a single account for a quick football ante-post punt. Conversely, the racing depth is thinner than at the specialist racing houses, which may be a consideration for a Grand National specialist.

Betmaster (account 65699)

BM Solutions GB Ltd, registered in Malta, runs Betmaster under UK Gambling Commission account 65699. Betmaster’s UK-facing site covers the standard football, horse racing and tennis markets; ante-post framing sits within the main category pages and is not always obvious from the homepage. The bookmaker is part of a wider European group, and the ante-post book is a translated-andserved version of the group’s broader pricing.

Worth it for the bettor who wants a basic sportsbook with ante-post coverage and is not fussy about which markets lead. It is not a racing-first book, so those prioritising horse racing ante-post may find the selection lacking compared to the UK-led majors.

10bet (account 43173)

Blue Star Planet Limited runs 10bet’s UK site under Commission account 43173. The 10bet app covers football, tennis and horse racing and carries cash out, a bet builder and live streaming. Ante-post markets for football are clearly laid out and priced earlier than the daily racing book; ante-post for tennis is offered on the major tours.

Worth it for the bettor whose ante-post interest is football and who wants cash out and bet builder alongside the future book. Jump racing fans may find the ante-post selection conventional rather than specialist, which is worth considering if looking for niche festival markets.

bet365 (account 55148)

Hillside (UK Sports) ENC operates bet365 under Commission account 55148 and is the largest single brand on this list by user volume. Ante-post markets across horse racing, football and tennis open early, with Bet Builder+ (combining markets from one event into a single bet, available pre-match and in-play), Super Boosts, acca Winnings Boosts and daily bet boosts running above the main book. The size of the firm means the ante-post book is rarely thinner than any competitor, and price is rarely the best in the industry on any single race — the value is in liquidity and in the fact that the market is open whenever the bettor is.

Worth it for the bettor who wants one app for ante-post across racing, football and tennis with a deep bet builder and a steady stream of price boosts. Those chasing deep longshot value should note that the margin on a 50/1 outsider can be wider here than at niche-racing books, and the pricing on favourites is rarely aggressive.

Copybet (account 53774)

Copybet UK Limited runs Copybet under Commission account 53774. The headline feature on racing is Best Odds Guaranteed all day every day on UK and Irish racing — and Copybet’s terms extend this to ante-post markets where the offer applies, which is a different position from William Hill’s restriction of BOG to day-of-race bets. First past the post is paid on horse racing even if the winner is later disqualified, which is the British convention.

Worth it for the bettor who wants BOG cover on ante-post and is willing to compare against the major racing-led books. Football ante-post bettors may prefer a wider market selection, as the offering here is serviceable but not the primary focus.

London Bet (account 66162)

Thistle Bet Limited runs London Bet under Commission account 66162 and offers sportsbook alongside casino. The app carries a 17+ App Store age rating, which mirrors the GB minimum-age rule but is a platform-level rating rather than a licence condition. Ante-post framing varies by category and tends to be lighter than the major racing-led books.

Worth it for the bettor who wants a single UK-licensed account for a small ante-post stake across categories. Less useful for a bettor with serious ante-post turnover — the ante-post book is shallow compared with the major houses.

BetMGM (account 39198)

LeoVegas Gaming PLC runs BetMGM’s UK sportsbook under Commission account 39198. The betting app covers a wide market set; promotional cadences on accumulators and free bets are common (each subject to its own opt-in, qualifying-bet and minimum-odds terms). Ante-post markets for football and horse racing are clearly laid out, and the pricing tracks the major houses rather than seeking to undercut them.

Worth it for the bettor who wants a global brand’s UK app with regular price boosts and acca promos. Less useful for a bettor whose ante-post interest is jump racing on the smaller meetings — BetMGM’s racing book is mainstream, not deep.

Offshore: what an unlicensed brand costs the bettor

A Great Britain licence is compulsory for any operator whose remote facilities are used in Great Britain. Section 33 of the Gambling Act 2005 (as amended by the Gambling (Licensing and Advertising) Act 2014) criminalises providing gambling facilities in Great Britain without the licence the Act requires; section 36 places the duty on those who aid and abet the operation. A Curaçao, Maltese or Gibraltar licence is not a substitute. The Commission’s public register is the only test.

The right way to frame this is as a loss of protection rather than as a legality. A bettor using an unlicensed brand has no GAMSTOP coverage, no Commission complaints route, no approved alternative-dispute-resolution body, and no British consumer redress if the operator withholds funds. There is no bonus-wagering cap of 10x and no £150 financial vulnerability check on the customer. The bonus the unlicensed brand advertises can be set on whatever terms the operator chooses, and credit-card gambling is not policed by the Commission’s LCCP condition 6.1.2 if the operator is not within the LCCP’s scope. The framing is honest: licensed sites come with verification checks, with limits, with mandatory exclusions; unlicensed sites come with none of those, and the bettor who loses funds to an unlicensed operator has fewer routes to recover them.

For ante-post betting specifically, the offshore label matters because non-runner rules are written by the operator and not policed by a national regulator. A brand running on a Curaçao licence and accepting UK customers has no obligation to apply the industry-standard non-runner rule or to match the British convention on first past the post. Read the terms, check the licence, and prefer the bookmaker on the Commission’s register.

What an ante-post bet pays back when it lands

The mechanics of a payout are simple. Stake × decimal odds = return; profit = stake × (decimal odds − 1); fractional odds express the same thing as a plus-one conversion (a/b → a ÷ b + 1). A £10 single at 20/1 (decimal 21.00) returns £210. A £5 each-way at 20/1 (which is £5 on the win and £5 on the place, so £10 total stake at the same price) returns the win part on the win outcome, the place part at a fraction of the win price if the horse places, and the whole stake lost if the horse neither wins nor places. The each-way fraction depends on the race and the field size — 1/4 odds for placers in fields of 5–7 runners, 1/5 odds for larger fields, 1/4 odds across the place terms in non-handicap handicaps with eight or more runners.

For an ante-post accumulator, the prices of the legs multiply. Three legs at 5/1, 3/1 and 4/1 produce a single price of 5×3×4 = 60 and a decimal equivalent of 61.00; a £5 stake returns £305. The accumulator payout, like the single, is paid at the price at which the bet was placed, not at SP. There is no BOG concession on an ante-post accumulator unless the bookmaker’s own terms explicitly include it — most do not, and the bettor should assume they do not.

The bettor’s reading of a payout is best done in two stages. First, what the bet will return at the price taken — the easy arithmetic above. Second, what the bet would have paid at SP or at a later price — the counterfactual that lets the bettor judge whether the ante-post price was worth the non-runner risk. A horse backed at 25/1 ante-post that shortens to 8/1 by declarations day, then wins at 8/1 SP, paid the ante-post price (25/1) and the bettor banked a 25/1 win rather than an 8/1 win. The same horse backed at 25/1 ante-post that drifts to 50/1, then wins, paid the ante-post price and the bettor banked a 25/1 win rather than the 50/1 SP it never reached. The second outcome is the bettor’s reward for taking the price early; the first is the price the market would have paid in any case, and the margin the bookmaker retained on the early price was higher than the margin on the SP price. A working ante-post strategy is to back the horses whose prices are visibly out of line with their form at the time the bet is placed, not the horses whose prices shorten because the rest of the market agrees with the punter.

A punt that loses a non-runner has paid the ante-post fee for the privilege of holding the price. The fee is not refundable. The receipt is the bet itself.

The licenced bookmaker landscape — what the file shows

The audit trail summarised earlier lists ten licence holders, each carrying a single remote general betting standard (real events) licence and most with a mix of sportsbook and racing verticals. Every licence holder on the audit is on the Commission’s register; every brand listed accepts customers in Great Britain under that licence. The register is searchable by business name, trading name, domain or account number, and the position of a brand on the register is the only test of who holds a licence at any given time. Quoting how many licensed brands exist without an access date is a figure that drifts as soon as the register is updated, so a count is not stated.

Several brands run under a single licensee, which means the audit trail does not list every UK betting brand — only those whose licence is held by a licensee the Commission names on the register. A bettor searching by brand name on the register finds the licensee behind that brand, the categories the licence covers, and the conditions attached. A bettor who wants to check any other brand — for ante-post or otherwise — does the same search.

Frequently asked questions on ante-post betting

What is an ante post bet?

An ante-post bet is a wager placed on a future event — typically a horse race — at a price taken well before declarations. The bet pays out at the price at which it was placed; if the selection does not run, the bet is usually settled as a loser and the stake is not returned. That non-runner treatment is the central cost of the format.

What is ante post betting?

Ante-post betting is the practice of placing bets on a market open well ahead of the event. The market is most developed around British and Irish horse racing — Cheltenham, Aintree, Royal Ascot, the Grand National — and runs alongside every major football league for outright, top scorer and relegation markets. The bookmaker’s terms govern how non-runners, abandoned races and Rule 4 are treated; the format is the same across operators but the rules differ in detail.

Does Rule 4 apply to ante-post bets?

Rule 4 applies when a horse is withdrawn from a race after betting has opened, and most major bookmakers apply it to ante-post bets the same way they apply it to day-of-race bets. The deduction is a p-per-£ figure set by the bookmaker and reduces the gross return on a winning bet proportionally. The right answer for any specific bookmaker is in that operator’s own Rule 4 table.

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

By searching the Commission’s public register by business name, trading name, domain or account number. The register lists the licensee (which is often a parent company rather than the trading brand), the licence category, the licence status and the registered business address. A match means the brand can lawfully take bets from customers in Great Britain; a non-match means it cannot.

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

Return is stake multiplied by decimal odds. Profit is stake multiplied by (decimal odds minus one). A £10 stake at decimal odds of 6.00 returns £60. The same bet in fractional odds at 5/1 returns £60, made up of £50 profit and the £10 stake. Fractional and decimal odds are two notations of the same payout; conversion is a/b → a÷b+1.

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

The margin is the slice of every £1 wagered that the bookmaker expects to keep over the long run, expressed as a proportion of turnover. It is read off a market by inverting the implied probability of each outcome (1 ÷ decimal odds), summing those probabilities, and subtracting the sum from 1. The remainder is the margin. A two-way market priced at 1.90 / 1.90 sums to a payout share of about 95% and a margin of about 5%; a market priced at 1.71 / 2.20 sums to a payout share of about 95.4% and a margin of about 4.6%. Margin is not a fee a bettor pays on a single bet; it is the expected deduction over a large number of bets at the same prices. A bettor who wants to know what a market truly costs reads the margin before reading the price.

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