Each-Way AtlasAbout this project
How we assign tiers A, B and C
A tier describes four documented features that a licensed bookmaker publishes on a given date, not the price or the places on any single race. Tier A needs all four, tier B needs the basics plus one more, and tier C needs at least one basic. Order inside a tier is alphabetical, and no scores are used.
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Who can be placed in a tier
A bookmaker is considered only if the public register of the UK Gambling Commission shows an Active record for betting on the day we check. Without that, it is not listed at all.
After that, we read the operator's published terms and mark each criterion as met or not met. A criterion we cannot read is Not verified, and it counts as not met until we can read it.
The short version: an Active register record comes first, then four yes-or-no criteria.
The four criteria
Each criterion is a published feature, so you can look it up yourself. Daily offers are deliberately left out, because they change with each race card.
| Code | Criterion | Evidence we need |
|---|---|---|
| K1 | Standard places and fractions for horse racing are published | A terms page that states them |
| K2 | Rules on Rule 4, dead heat and non-runners are published | A terms page that states them |
| K3 | A standing option to change place terms is published, as a feature and not as a daily offer | A description with its conditions |
| K4 | Best Odds Guaranteed on horse racing is published | A policy page with its conditions |
Extra places on a given day are not part of any tier. They appear in a separate column with their own date, on the page about extra-place offers.
What each tier requires
| Tier | Rule |
|---|---|
| Tier A | K1, K2, K3 and K4 are all met |
| Tier B | K1 and K2 are met, plus K3 or K4 |
| Tier C | K1 or K2 is met |
A bookmaker that meets neither K1 nor K2 on the date is not placed in a tier on that date. The tiers are used on the ranking page, which UK bookmakers publish which terms.
Order inside a tier and moving between tiers
Inside a tier, bookmakers are listed in alphabetical order. A fee or a partner programme does not change the order, and we reject any programme that asks for a place in a list. See the disclosure for the commercial relationships.
A bookmaker moves when a re-read fact differs from the one before. Terms are re-read every 7 days, as set out in how we check our facts.
The short version: a bookmaker moves tier only when a dated fact changes, never because of a fee.
Example. Operator X is not a real bookmaker. It meets K1 and K2 and publishes a standing option to change place terms (K3) but no Best Odds Guaranteed policy, so it sits in tier B.
Later it publishes the policy with conditions; all four are met and it moves to tier A.
Had its Rule 4 wording been removed instead, K2 would no longer be met, and with only K1 it would fall to tier C.
What a tier does not tell you
A tier says nothing about the price of a horse, the number of places on your race or whether an offer is running today. Read the places, the fraction and the win price on your own race, using the guide to comparing each-way terms.
The terms behind the tiers are tabulated in standard place terms, and the policy wording is on the page about Best Odds Guaranteed on racing. These criteria are version 1, dated 7 November 2026.
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