Betting Odds United Kingdom: Where the Best Prices Concentrate
Across our sampled UK markets, Betfair returns the best price on 48.6% of selections at an average margin of 4.64% — the sharpest combination among the operators tracked here. Coral (27.1% best-price share, 5.66% margin) and Ladbrokes (20.2%, 5.88%) follow. Odds differences between UKGC-licensed bookmakers are structural, not random: they come from how each operator sets its margin. This hub explains what those numbers mean and where the value clusters.
Today's matches
See all odds →Best-price share: which UK bookmakers top the price the most
Best-price share is the proportion of sampled selections on which a bookmaker offered the highest available odds. It is the single most useful metric for a value bettor because it shows how often opening an account there actually beats the field.
Ranked by best-price share across our sample:
- Betfair — 48.6% (278 selections sampled)
- Coral — 27.1% (247)
- Ladbrokes — 20.2% (253)
- Sky Bet — 15.7% (242)
- Unibet — 15.2% (250)
- 888sport — 15.1% (292)
- BetMGM — 14.8% (122)
- William Hill — 14.7% (266)
- Betway — 12.8% (257)
- Paddy Power — 9.7% (257)
- Virgin Bet — 9.3% (214)
- BoyleSports — 8.9% (246)
- LiveScore Bet — 8.9% (214)
- BetVictor — 6.2% (243)
No single book leads every market, which is why the shares sum to more than 100%. Betfair's dominance reflects its exchange-adjacent pricing model; the traditional high-street brands (Coral, Ladbrokes) cluster next because their promotional pricing pushes selected odds above the field.
Average margin: how the bookmaker's cut differs
Margin (or overround) is the built-in edge a bookmaker bakes into a market. A two-way market priced with zero margin would sum to 100% implied probability; anything above that is the operator's cut. Lower margin means the customer keeps more of the theoretical value.
Average sampled margins:
- Betfair — 4.64%
- BetMGM — 5.24%
- Coral — 5.66%
- Ladbrokes — 5.88%
- Unibet — 5.89%
- Sky Bet — 6.45%
- Betway — 6.81%
- 888sport — 7.09%
- Paddy Power — 7.11%
- William Hill — 7.19%
- bet365 — 7.44%
- BetVictor — 7.66%
- BoyleSports — 7.81%
- Virgin Bet — 8.30%
- LiveScore Bet — 8.46%
The gap between the tightest and widest margin here is roughly 3.8 percentage points — a meaningful difference over a season of stakes. 10bet shows a very low 3.00% margin but on only 18 sampled selections, too small a sample to rank alongside operators with 200+ observations. Treat that figure as indicative only.
Note that bet365 scores 8.8 for odds in our ratings despite a 7.44% sampled margin: the odds rating weights market coverage and depth alongside price, and bet365 leads on coverage (9.6) and sports depth (9.5).
Best odds — Operator
| # | Operator | Best price share | Avg. margin | |
|---|---|---|---|---|
| 1 | Betfair | 32% | 3.7% | Compare Odds |
| 2 | BetMGM | 79% | 4.4% | Compare Odds |
| 3 | Coral | 46% | 5.4% | Compare Odds |
| 4 | Betfred | — | — | Compare Odds |
| 5 | 10bet | — | — | Compare Odds |
| 6 | Paddy Power | 26% | 7.8% | Compare Odds |
| 7 | Sky Bet | 27% | 7.5% | Compare Odds |
| 8 | bet365 | 17% | 7.4% | Compare Odds |
Market Movers
See all odds →| Events | Opening | Current | Δ |
|---|---|---|---|
| XAS Roma v Real Madrid · Betfair | 1.01 | 4.10 | ▲ 305.9% |
| XManchester City v Paris Saint Germain · Betfair | 1.01 | 4.10 | ▲ 305.9% |
| XAston Villa v Fenerbahce · Betfair | 1.01 | 3.85 | ▲ 281.2% |
| XIpswich Town v Fulham · Betfair | 1.01 | 3.75 | ▲ 271.3% |
| AS RomaAS Roma v Real Madrid · Betfair | 1.06 | 3.80 | ▲ 258.5% |
| XSunderland v Brighton and Hove Albion · Betfair | 1.01 | 3.60 | ▲ 256.4% |
| XShakhtar Donetsk v AEK Athens · Betfair | 1.01 | 3.55 | ▲ 251.5% |
| Coventry CityCoventry City v Newcastle United · Betfair | 1.06 | 3.50 | ▲ 230.2% |
Why best-price share and margin can disagree
A bookmaker can post the best price on individual selections while still running a wider overall margin, and vice versa. Coral and Ladbrokes sit high on best-price share partly through price boosts on popular selections, yet their average margins (5.66% and 5.88%) remain competitive across the full sample.
Betfair is the exception that satisfies both metrics — top best-price share and lowest margin — which is why it is the reference point for value-focused UK bettors. If you back a narrow set of markets, chase the operator that tops the price on those specific selections; if you bet broadly, the lowest average margin protects the most value over volume.
The practical conclusion: holding two or three accounts across the top-margin group lets you take the best available price on most selections rather than accepting one book's line.
How margin varies by sport and market depth
Margin is not uniform within an operator. Liquid markets — Premier League match odds, ATP and WTA singles, NBA moneylines — carry the tightest overrounds because competition compresses them. Deeper or lower-liquidity markets (correct score, first goalscorer, outright futures) typically run wider.
Market coverage ratings reflect how far each book prices into those secondary markets. bet365 (9.6) and Betfair (8.8) lead on coverage, meaning more markets are available even where margins widen. For horse racing and football accumulators, that depth matters as much as the headline price.
Use the sport-specific pages to compare prices in context: Football odds, Horse Racing odds and Tennis odds each behave differently on margin and best-price share.
Reading opening vs current lines
A single quoted price is a snapshot. Lines move as money and information arrive, so the value in an odd depends on when you take it. Watching how a market drifts or shortens from its opening price tells you where the informed money is going.
Our market movers feed tracks these shifts, and the futures odds section covers longer-term outright markets where early prices tend to carry the most value before the field tightens them. Combined with the margin data above, timing your bet against line movement is where price comparison turns into edge.
Regulation and what it means for odds
Every operator on this page holds a licence from the UK Gambling Commission (UKGC), the regulator for the United Kingdom, with a minimum betting age of 18. bet365 operates under UKGC licence 39563.
UKGC licensing does not standardise odds — margins remain a commercial decision for each book — but it does mean all listed operators are legally permitted to accept UK customers and are bound by the same consumer-protection and fund-segregation rules. For the full list of compliant operators, see our legal betting sites United Kingdom page. Licence-safety ratings across the group run from 8.3 (10bet) to 9.5 (bet365).
FAQ
Which UK bookmaker offers the best odds most often?
In our sample, Betfair returned the best available price on 48.6% of selections — the highest best-price share of any operator tracked. Coral (27.1%) and Ladbrokes (20.2%) rank next.
What does bookmaker margin mean?
Margin, or overround, is the built-in edge a bookmaker adds to a market. A lower margin means better value for the bettor. Betfair posts the lowest average sampled margin at 4.64%, ahead of BetMGM (5.24%) and Coral (5.66%).
Why do odds differ between bookmakers?
Each UKGC-licensed operator sets its own margin and pricing model, so implied probabilities differ across the same market. Exchange-style and low-margin books like Betfair price closer to true probability, while wider-margin books build in a larger cut.
Is it worth holding more than one betting account?
For value, yes. No single bookmaker tops the price on every selection — the shares sum to well over 100%. Holding accounts across the low-margin group (Betfair, Coral, Ladbrokes, Unibet, Sky Bet) lets you take the best available line on most bets.
Does a low sample size affect the odds data?
Yes. Figures based on few observations are less reliable. 10bet shows a 3.00% margin but on only 18 sampled selections, so it is not ranked alongside operators with 200+ observations. Larger samples give more dependable comparisons.
Are these bookmakers legal in the United Kingdom?
All operators listed here are licensed by the UK Gambling Commission and legally permitted to accept UK customers aged 18 and over. UKGC licensing enforces consumer protection but does not standardise odds.