Comparing betting sites in Great Britain — the cost behind the offer

Updated October 2026

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Comparing betting sites is less about finding the biggest name and more about reading what sits behind the marketing. A welcome offer is a price the bookmaker sets; the punter pays it through the wagering it carries and the margin baked into every price. Two sites can look interchangeable and behave nothing alike once a real stake is on them. This page is built around that difference: ten UK-licensed bookmakers held against one another, the legal frame that holds them in place, and the arithmetic that tells you what an offer is actually worth.

Data current as of 27 October 2026 and checked against the Gambling Commission’s public register.

Responsible gambling starts before the first deposit

A British bookmaker that holds a Gambling Commission licence is bound by the same safer-gambling duties, and the comparison starts there. The Commission requires operators to offer deposit limits, time-outs, product restrictions and self-exclusion, and to point customers at GamCare, GambleAware, the National Gambling Helpline and the NHS gambling clinics. Those are the floor; the ceiling differs.

Identity, age and the moment a free bet becomes a paid one

A licensed operator verifies name, address and date of birth before the first deposit, and the rule has covered bonuses and free bets since 7 May 2019. There is no anonymous play at a licensed site, even on a “free” offer: the account has to clear the same identity checks as one funded by debit card. The minimum age is 18 across Great Britain.

A financial vulnerability check sits on top of that for remote betting: once deposits minus withdrawals exceed £150 in a rolling 30-day window, the operator runs a public-record check, things like bankruptcy or county-court judgments. It is not an income check and not a credit-reference search. Financial risk assessments have been announced in stages with no start date yet, so don’t take any headline about “affordability checks” as settled law.

GAMSTOP and what self-exclusion actually covers

GAMSTOP is the multi-operator self-exclusion scheme, and it is a mandatory licence condition for every online operator in Great Britain since 31 March 2020. 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. The cover is online: sites and apps. Betting shops run a separate service.

Deposit limits are the customer’s lever in day-to-day play. The first changes under the Commission’s remote technical standards took effect on 31 October 2025; a second phase was postponed to 30 September 2026. There is no state-set ceiling on stake or loss, and limits are the punter’s own choice.

Help lines worth keeping open

GamCare runs the National Gambling Helpline. GambleAware funds treatment and research. NHS gambling clinics take referrals. Gamblers Anonymous runs peer-support meetings. An operator that links to these from a footer is doing the minimum the LCCP asks; an operator whose safer-gambling page is hard to find is signalling something, even with a clean licence.

Bonuses and free bets: the marketing price, the wagering cost

A welcome offer is the cheapest way to get a new punter to fund an account, and the most expensive to clear. The headline number is rarely the price; the price is what the wagering, minimum odds, expiry and stake-return rule extract from it.

Wagering caps and what changed in 2026

Since 19 January 2026 the Commission caps wagering requirements on bonuses at 10x. A £10 bonus with a 50x requirement used to mean £500 of qualifying bets; under the cap, no more than £100. Mixed-product promotions — “bet on football to get free spins” — are banned. Free bets with no wagering condition sit in a grey area the Commission has not closed, so check the terms rather than assume a pass.

Stake returned, or stake not returned

A free bet whose stake is not returned costs more than the marketing suggests. The free bet is paid in winnings only, so the headline price is the gross figure but the punter’s price is the winnings minus the cost of the qualifying bet that earned the free bet. A £10 free bet at 4.0 returns £30 in winnings, not £40. A “risk-free” bet refunded as a free bet is the same shape: stake returned as a free bet, not as cash, on a losing first bet.

Minimum odds, qualifying bets and the four-leg trap

Most welcome offers ask for a qualifying bet at minimum fractional odds of 4/1 (decimal 5.0) or higher, sometimes on an accumulator with three or more legs. Hollywoodbets, for instance, refunds the stake as a free bet of up to £30 on a first qualifying losing accumulator with 3+ legs at minimum odds of 4/1, settled within seven days; one free bet per customer. That is the marketing shape: a generous cap, narrow odds, short shelf life, one shot.

Dabble’s “Bet £10, Get £10 in Free Bets” is a simpler form: minimum odds, a seven-day free-bet expiry, the stake not returned. BoyleSports hands out £20 in free bets for a £10 qualifying bet. Octobet gives 50% back as a free bet up to £50 plus a £10 casino bonus. Bet Ahoy splits its £10 free bet into a £5 sports bet and a £5 acca. Each is a different mix of stake-returned, minimum-odds, expiry and per-customer cap, and they don’t compare on the headline alone.

What a “boosted price” actually boosts

Enhanced odds, price boosts and acca insurance each carry their own price. An odds boost adds margin the bookmaker has paid for; an acca insurance refunds a stake as a free bet if one leg lets the punter down, with its own minimum-legs and minimum-odds conditions. bet365 runs Super Boosts, Winnings Boosts on Bet Builders and selected singles, and daily Bet Boosts, all of which sit on top of the standard margin rather than replacing it. A punter who only takes boosted prices is paying the same underlying margin and the boost premium.

Mobile and apps: where the comparison gets quieter

The mobile comparison rarely turns on features; ten years in, every licensed bookmaker has an iOS app, an Android app, and a mobile site that loads in under three seconds. What still differs is how the app handles live data, login friction and the small things that decide whether a punt is placed or missed.

Live data and streaming

bet365 pairs its app with in-play betting, live streaming of events worldwide, Bet Track, Match Live and a Live Golf Tracker for following bets in play. That toolkit is the benchmark other apps are measured against. 888sport offers pre-match and in-play betting, Cash Out, Bet Builder, racing streams, BetFinder form tools, a live bet feed and daily boosted odds. BetVictor adds Best Odds Guaranteed on UK and Irish racing, enhanced live race streaming and a BetFinder feature for racing, alongside Smart Stats.

Login, payments and the small frictions

bet365 supports Face ID on supported devices and accepts debit card, PayPal and Apple Pay. Midnite takes Visa, Mastercard, Apple Pay, Google Pay and Trustly. Betmaster accepts Visa, Mastercard, Maestro and V PAY. Credit cards are banned for gambling in Great Britain since 14 April 2020, including credit-card-funded e-wallet top-ups; debit cards and bank-based payments are not covered. An app that hides the deposit method behind a deposit is one extra tap the punter pays on every top-up.

App Store ratings and what an age rating tells you

Several of these apps carry a 17+ App Store age rating — kwiff and London Bet, for instance. The rating reflects the operator’s UK age policy and the App Store’s enforcement, not the Commission’s; the Commission requires 18 across the board. A 17+ sticker is not the same as a 17-year-old account.

Predictions and strategy: what the comparison is actually for

A comparison page that ends at the offer hasn’t earned its name. The point of comparing bookmakers is to pick the one that fits the punter’s own way of betting: what to back, how often, with what stake.

Tipsters, accumulators and the price of being told who to back

Tipsters sell predictions. The Commission treats them as advertising when they cross into inducement; the ASA enforces that boundary through the CAP Code. The punter pays for a tipster’s service in subscription and in the margin baked into the price the tipster picks. A tip that names a 3/1 shot pays the same margin whether it wins or loses; the margin is in the odds, not the outcome.

Bankroll, staking plans and the slow arithmetic

A staking plan does not change the margin. A flat-stake punter and a Kelly-stake punter face the same overround on every market; the difference is variance, not expected value. Martingale, Fibonacci, “recovery” staking — none of them move the underlying price, and most amplify variance until a bad run wipes the bank.

Forecasts versus predictions

A forecast names a likely outcome; a prediction is a stake at a price. The comparison is between bookmakers, not between tipsters. Picking the bookmaker with the thinnest margin on the market the punter actually backs is the lever that pulls expected value; chasing the highest price on a single game is the move that gets advertised, not the one that compounds.

Bet types and odds: the engine under the comparison

The bet types a bookmaker offers decide what the punter can place. A bookmaker with singles, doubles and accumulators but no each-way is half a bookmaker for horse-racing punters; one with cash out but no Bet Builder is half an in-play book. The odds format — fractional 5/1, decimal 6.00, the SP (starting price) on the racecourse — is the language all of this is written in.

Singles, doubles, trebles and accumulators

A single is one selection; a double is two; a treble is three; an accumulator (“acca”) is four or more. The odds multiply into one price. A four-fold acca at 2.0, 2.0, 2.0, 2.0 carries a combined price of 16.0 and pays £160 on a £10 stake. The margin compounds with every leg, which is why an acca is a juicier price for the bookmaker than for the punter.

Each-way bets

Each-way splits the stake into two equal bets: one to win, one to place. The place terms vary by race and operator, and the punter pays double the stake for the chance of a place payout. A £10 each-way at 5.0 with 1/4 odds for places returns £22.50 if the horse places (the £5 win part is a push at 5.0 minus stake, the £5 place part pays 1.25×stake) or £50 if the horse wins.

Bet Builder and same-game multi

A Bet Builder combines markets from one event into a single bet — a player to score and both teams to score, for instance. bet365’s Bet Builder+ runs pre-match and in-play. The combined price reflects the correlation between legs, and the margin is usually higher than a standalone single.

Cash out

Cash out settles a bet before the event finishes, at a price the bookmaker sets. The price the bookmaker offers is its own, not a market price, and it widens the bookmaker’s margin on the bet. A punter who cashes out regularly is paying the bookmaker twice — once on the margin baked into the original price, once on the cash-out price.

Spread betting and the FCA line

Spreadex is regulated by the FCA for spread betting and by the Gambling Commission for fixed-odds betting, and its own terms state that spread betting losses can exceed the deposit. Spread betting is a different product, on a different licence, with a different tax (3% financial, 10% other), and a punt on a spread is closer to a trade than a bet. Treat it as such.

Exchanges and the betting-intermediary licence

Matchbook runs a betting exchange and matches back-to-lay rather than setting prices. The Betdaq brand has been acquired by Triplebet Limited, operator of Matchbook, and Betdaq accounts will not transfer. Betting exchanges run on a remote betting intermediary licence — a separate licence category under the Gambling Act 2005, with its own rules on rates and settlement.

Sports and tournaments: what the comparison actually compares

The same bookmaker can be the cheapest on Premier League match odds and the most expensive on a Grade 1 Novices’ Chase. Comparing sites on the sports the punter actually backs is the comparison that pays back.

Football

Premier League match odds, both teams to score, correct score, corners, cards, player shots, shots on target — every licensed bookmaker offers the headline markets, and a handful go deeper. bet365 is the official global betting partner of the UEFA Champions League, which is a sponsorship fact rather than a price fact: the margin on a Champions League group game is set by the bookmaker’s own trading desk, not the trophy cabinet.

Horse racing

Best Odds Guaranteed is a horse-racing concession: the bookmaker pays the bigger of the price taken and the starting price. BetVictor offers BOG on UK and Irish racing, alongside enhanced live race streaming and BetFinder form tools. Off-course pool betting on horse or dog racing is a separate licence and duty, and only the Tote and pool operators run it.

Greyhounds, darts, snooker, MMA

Lower-television sports carry higher margins and thinner markets. A bookmaker that prices a Tuesday-night Brizzle card at 12% overround and one that prices it at 8% is offering different value on the same race.

Esports, virtuals and novelty markets

Esports are treated like any other event under a real-events licence; virtual events are a separate licence category (Silkbet, for instance, holds three Gambling Commission remote licences for casino, general betting real event and general betting virtual event). Bets on politics, TV shows and novelty markets are offered by GB bookmakers under their own rules. No statutory prohibition was found.

In-play and live streaming

In-play betting is offered by GB bookmakers under their licence conditions; it is not “unrestricted” as a legal conclusion. The controls are operator-level. Live streaming is the bookmaker’s call: bet365 streams worldwide events; 888sport streams racing; BetVictor streams UK and Irish racing; some apps carry no live pictures at all.

The ten licensed bookmakers, head to head

What follows is the comparison itself: ten bookmakers that hold a Gambling Commission remote licence for Great Britain, ranked here in the order research handed them, and assessed on what their own published terms state. The table is the legal frame and the headline shape; the prose underneath is what the table cannot carry.

The licence numbers are the check that matters: the Commission’s public register is searchable by business name, trading name, domain or account number, and it is the whole test of whether a brand holds a remote licence for Great Britain. A foreign licence — Curaçao, Malta, Gibraltar — is not a substitute. A domain proves nothing: licensed operators use .com as well as .co.uk.

Where the offers diverge, in plain words

Three offers ask for a £10 qualifying bet at minimum odds and return a free bet of similar size: Dabble, Bet Ahoy and the BoyleSports welcome. They differ in shape: BoyleSports’ £20 is one block, Dabble’s £10 carries a 7-day expiry and stake-not-returned, Bet Ahoy splits into a £5 sports and a £5 acca. Hollywoodbets refunds up to £30 but only on a losing acca with three or more legs at 4/1 or greater, settled inside a week. Octobet gives 50% back up to £50 plus a casino bonus, the only one of the ten whose welcome crosses product lines — and a cross-product welcome under the 19 January 2026 rules is the very thing the Commission has now banned.

The rest of the table is not a welcome offer: Matchbook is an exchange, Spreadex carries the FCA line on spread betting, Geoff Banks and BetVictor sell form and racing tools rather than headline sign-up deals, 888sport sells the breadth of its in-play and racing feeds.

What the offer costs in margin

A free bet’s stake-not-returned rule compounds with the market margin. A £10 free bet at 4.0 with a 6% overround returns £30 in profit, not £40 — and the effective yield is the winnings minus the qualifying bet’s expected cost. A punter who clears four welcome offers in a year on different books is paying four times the market margin, plus four qualification rounds, plus four sets of minimum-odds frictions. The headline “£30 free bet” is a marketing number, and the cost is in the qualifying bet.

The legal frame that holds the comparison together

A betting site that serves customers in Great Britain needs a Gambling Commission licence wherever the operator is based. The Gambling (Licensing and Advertising) Act 2014 closed the previous offshore exemption; since then, providing gambling facilities in Great Britain without the licence the Act requires is an offence under section 33 of the Gambling Act 2005 (on summary conviction up to 51 weeks’ imprisonment, a fine up to level 5, or both; six months in Scotland). It is aimed at the operator, not the customer, and the customer who bets on an unlicensed site loses British consumer protection without committing an offence.

The licence types

Betting licences fall into five remote categories: general betting standard (real events), general betting standard (virtual events), general betting limited, pool betting, and betting intermediary. An exchange holds a betting-intermediary licence; a sportsbook holds a real-events general betting standard licence; the Tote-style pool operators hold pool betting licences. A casino is a separate permit. Lottoland UK combines casino, lottery betting, sports betting and scratchcards under a Commission licence for customers in Great Britain.

What the licence does and does not cover

A licence is the right to take bets from Great Britain, on the operator’s own terms, under the Commission’s Licence Conditions and Codes of Practice. The Commission’s safer-gambling duties follow; the operator’s marketing is bound by the LCCP and by the CAP Code (non-broadcast) and BCAP Code (broadcast), enforced by the ASA. Northern Ireland is outside the Gambling Act 2005 and has its own older law, so “GB-licensed” or “Great Britain licence” is the only correct framing; a Commission licence does not regulate Northern Ireland.

Tax and the punter’s pocket

The punter pays no tax on betting winnings in Great Britain. General Betting Duty is the operator’s tax on gross profits, currently 15%; from 1 April 2027 a new remote betting rate of 25% applies within it, while remote bets on UK horse racing, self-service betting terminal bets, pool betting and in-person betting stay at 15%. Until 1 April 2027 the remote rate stays at 15%; whether operators pass duty on through odds is not established, and never write that the player is charged duty. Spread betting has its own rates: 3% financial, 10% other.

The bonus cap and what is banned

Since 19 January 2026: wagering requirements on bonuses are capped at 10x; mixed-product promotions are banned; the cap covers bonuses but its application to free bets with no wagering condition is not established. Credit cards are banned for gambling, including credit-card-funded e-wallets. Whistle-to-whistle TV advertising has been industry code since 1 August 2019: betting ads are not shown on TV from five minutes before a live sporting event to five minutes after, before the 9pm watershed, with horse and greyhound racing excluded. The Premier League clubs’ withdrawal of gambling sponsorship from the front of matchday shirts from 2026/27 (sleeves and hoardings remain) is voluntary, not law.

What an unlicensed site costs

An unlicensed site offers no GAMSTOP coverage, no Commission complaints route, no approved dispute-resolution body, no British consumer redress if funds are withheld, and no binding by the 10x bonus cap or the £150 vulnerability check. The Commission enforces through disruption rather than blocking: cease-and-desist notices, search-engine referrals, work with registrars, hosts and payment providers; court-order DNS blocking powers are granted or imminent, but ISP blocking is not in operation. The framing is licensed = checks and consumer protection, unlicensed = none of those and possible loss of funds. Neither is the safe choice by default.

Overview: the fundamentals of a comparison

A betting site comparison rests on five questions the punter should ask each brand. They are not the marketing questions; the marketing answers itself.

What a bookmaker’s margin really means

A bookmaker’s margin is the cut of every pound bet that the bookmaker keeps, on average, over a market. It is the difference between 100% and the payout share implied by the prices on every outcome of one market. The headline price the punter sees is gross; the margin is what is inside it.

The arithmetic on a two-way market

Take an illustrative two-way market priced at decimal odds 1.90 and 1.90 — an example, not a quoted price. The implied probability of each outcome is 1 ÷ 1.90, or about 52.63%. Two outcomes sum to about 105.26%. The payout share — the share of every pound that returns to punters on a true result — is 1 ÷ 1.0526, or about 95.0%. The margin is 100% minus 95.0%, or about 5.0%.

That is the band: a bookmaker’s margin on a two-way market priced at 1.90 / 1.90 sits at roughly 5%, give or take the rounding on the third significant figure. The margin is the bookmaker’s take before any individual bet’s outcome. A £100 stake across the market pays back £95 on average; the £5 is the margin, regardless of which side wins.

What the margin does to a combination bet

A four-fold accumulator at 2.0 on every leg carries an implied probability of 1/16 on each leg. Each leg’s margin compounds: a 5% margin on each of four legs is not 20% on the acca but closer to 19% in the compounded sense. The bookmaker’s cut on an acca is the highest in the book. The headline price is the longest; the margin is the deepest.

What the margin does to an each-way bet

An each-way bet pays place terms that are a fraction of the win odds — typically 1/4 or 1/5 of the win price for the place part, against a place finish. The place terms are the bookmaker’s own; the place market margin is its own and is not the same as the win market margin. The punter pays two margins on one stake.

Why the comparison hinges on the margin

A bookmaker’s headline price on a single match is not the comparison; the comparison is the margin on the markets the punter backs, weighted by how much the punter stakes on each. The bookmaker with the lowest margin on Premier League match odds is the cheapest place to back Premier League match odds. The bookmaker with the lowest margin on horse racing each-way is the cheapest place to back each-way horses. The comparison is dozens of markets, not one.

How to verify a licence in 90 seconds

The Gambling Commission’s public register is the whole test. A punter does not need a lawyer; they need the operator’s account number and the Commission’s search box.

Step one: get the account number

Every licence in this page is paired with an account number. It is the operator’s identifier on the register and is independent of the domain. The Commission’s register lists brand names, trading names, domain names and account numbers; an account number uniquely identifies a licence holder.

Step two: search the register

The Commission’s site accepts any one of those fields. A search for “39028” returns 888 UK Limited; a search for “888sport” returns the same holder. The register shows the licence categories — remote general betting standard (real events), remote general betting standard (virtual events), remote betting intermediary — and the licence status. “Active” is what matters.

Step three: read the licence conditions and codes

The LCCP and remote technical standards are the rules the licence binds the operator to. The Commission’s site links to both. The 10x bonus cap, the £150 vulnerability check, the GAMSTOP duty, the credit-card ban, the safer-gambling duty of care: each is a clause in a published document, not a press release.

Step four: check the trading name and domain match

A licence is held by a company, and the trading name on the register must match the site the punter is on. 888 UK Limited trading as 888sport on 888sport. Triplebet Limited trading as Matchbook. BV Gaming Limited trading as BetVictor. A mismatch is a red flag and the punter should check whether the bookmaker’s footer states the holder.

What the operator reviews come down to

Each of the ten bookmakers holds the same legal floor and a different market position. The right one for the punter is the one that fits the punter’s own betting, not the marketing.

888sport

A broad in-play and racing book with Cash Out, Bet Builder, racing streams, BetFinder form tools and daily boosted odds. The acca insurance and the BetFinder form tools earn the headline room. Punters who bet singles on Premier League match odds and both-teams-to-score markets will find the depth; punters chasing acca insurance should weigh the per-leg margin against the refund shape.

Geoff Banks

The GB Sports advisors app carries live in-play and ante-post prices on future events. A bookmaker built around price on a narrow event list rather than a wide market catalogue. Best for punters who track one or two sports in depth and want ante-post value on the major meetings.

BoyleSports

£20 in free bets for a £10 qualifying bet is the headline, and the per-customer cap is generous against the comparables. The smaller free-bet block means the wagering requirement is short, the qualifying bet’s cost is low, and the seven-day expiry is the only frictional term. A clean shape for a one-shot welcome rather than a build.

Hollywoodbets

Refund on a losing first acca, up to £30, stake £10+, three or more legs, 4/1 or greater, settled within seven days. The cap is high and the shape is generous on a winning first acca; on a losing first acca, the free bet refund carries the cost of the qualifying stake. The terms matter more than the headline.

Dabble

£10 free bet for a £10 qualifying bet, minimum odds, seven-day expiry, stake not returned. A standard-shape welcome with a standard stake-not-returned rule. The qualifying bet’s minimum odds are the only frictional term and they are the only number worth checking before the deposit.

Matchbook

An exchange rather than a sportsbook. Back and lay, peer-to-peer, commission on net winnings rather than margin baked into prices. Best for punters willing to learn a lay book and a back book in the same app; the welcome shape is not the comparison, the commission rate is.

Spreadex

FCA-regulated spread betting alongside Gambling Commission-regulated fixed-odds. The two products are different bets with different licences and different tax treatments. Spread losses can exceed the deposit; that is the headline on the spread side, and it is the most important sentence on the page for any punter considering the spread product.

BetVictor

Best Odds Guaranteed on UK and Irish racing, enhanced live race streaming, BetFinder for racing, Smart Stats. A racing book that pays the bigger of taken price and starting price on UK and Irish racing. Best for racing-led punters; the in-play and acca depth is wider than a pure racing shop but narrower than a full-sportsbook.

Octobet

50% back as a free bet up to £50 plus a £10 casino bonus. The cross-product shape is the headline and the risk: cross-product bonuses have been banned under the 19 January 2026 rules, so any new welcome that crosses products is the very thing the Commission has now closed. The existing terms may be grandfathered; the new ones won’t be.

Bet Ahoy

£10 free bet for a £10 qualifying bet, split into a £5 sports bet and a £5 acca. A two-part welcome that splits the wagering risk across a single and an accumulator. The shape is unusual; punters who prefer a single-block welcome should weigh it against the simpler Dabble or BoyleSports shape.

What this comparison is for, and what it is not

A comparison of betting sites is a comparison of legal frames, the offers on top of them and the markets inside them. It is not a forecast of who wins the Premier League, a tip on the 3.15 at Newbury, or a list of the bookmakers the punter “should” use. Each of those would require knowledge nobody has. The punter acts on prices and margins, and the comparison’s job is to lay them side by side so the punter can pick with eyes open.

The legal frame is the same for every licensed bookmaker; the offers are the marketing on top of it; the margins are the difference between the books. The arithmetic is the same arithmetic on every book. A comparison that ends at the headline offer has read the marketing and skipped the price.

Frequently asked questions

Where to compare online betting odds?

Comparison sites carry an odds feed for the major events and a snapshot margin per bookmaker, but the live price the punter gets is the one on the bookmaker’s own site at the moment the bet is placed. Two bookmakers showing 5/1 on the same horse at 9:00am may show different prices five minutes later. Use a comparison feed for the long-run margin, then check the live price before staking.

How to compare betting odds?

Convert every price to implied probability: divide 1 by the decimal odds (or a ÷ b + 1 for fractional a/b). Add the implied probabilities of every outcome of one market. The total is the overround; 100 minus the overround is the payout share; the difference is the margin. The bookmaker with the lowest total on the market the punter backs is the cheapest place to back that market.

How to compare betting site features?

The licence is the floor; the offer is the price; the margin is the engine; the safer-gambling tools are the safety net. Punters who bet singles on football match odds should weigh match-odds margin first, acca-liveness third, welcome offer fifth. Punters who bet each-way horses should weigh each-way place terms first, Best Odds Guaranteed second, racing streaming third. The order is the punter’s, not the comparison’s.

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

The Commission’s public register is searchable by business name, trading name, domain or account number. The account number is the cleanest check; the licence status reads “Active”. A licence is held by a company; the trading name on the register should match the site the punter is on. A foreign licence is not a substitute.

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

Return equals stake multiplied by decimal odds. Net profit equals stake multiplied by (odds minus 1). A £10 stake at decimal 3.75 returns £37.50, profit £27.50. A four-fold accumulator at decimal 2.0 on every leg carries combined odds of 16.0; a £10 stake returns £160, profit £150. The bookmaker’s margin sits inside those odds; the return is gross of margin and net of the qualifying bet’s expected cost.

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

The margin is the cut the bookmaker keeps on average over a market. Convert every outcome’s odds to implied probability, add the probabilities, and the total is the overround. 100 minus the overround is the payout share; the rest is the margin. On a two-way market priced at decimal 1.90 and 1.90 the overround is about 105.26%, the payout share about 95.0%, and the margin about 5.0%. That is the band, and it is what the prices carry whatever the result.

1. Does it hold a Gambling Commission remote licence?

Check the public register. The Commission’s site lets a punter search by business name, trading name, domain or account number. A licence is the floor; everything else sits on it. The account numbers in the table above can be searched directly; each one resolves to a real-events licence under a named holder. No single brand is “the only” licensed one — the register lists hundreds.

2. What does the welcome offer actually cost?

The cost is the wagering multiple, the minimum odds, the expiry, the stake-returned rule and the per-customer cap. A £10 free bet at minimum odds 4/1 with a 7-day expiry and stake not returned is not the same price as a £20 free bet at minimum odds 1/2 with a 30-day expiry and stake returned. Read the small print, and read the qualifying-bet terms in particular.

3. What is the margin on the markets the punter actually backs?

A bookmaker with a 4% Premier League match-odds margin and an 8% correct-score margin is offering better value on the match-odds market and worse on the correct-score market than one with 5% and 6% respectively. The headline “best odds” claim is usually about match odds; the rest of the book is the bookmaker’s main earner.

4. What safer-gambling tools are first-class?

Deposit limits, time-outs, product restrictions, self-exclusion, GAMSTOP enrolment, signposted help lines. The Commission’s remote technical standards and LCCP condition 3.4.4 set the floor; the ceiling is the operator’s own safer-gambling page.

5. What does it cost to get money in and out?

Credit cards are banned. Debit cards and bank-based payments are not. Apple Pay and Google Pay are accepted at some shops, not all. E-wallets add a step; the punter pays the e-wallet’s fees and the bookmaker’s processing time. Withdrawal time is the bookmaker’s: same-day, 24-hour, three-day.

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