William Hill Best Odds Guaranteed Promotion Explained

William Hill Promotion

William Hill's Best Odds Guaranteed promotion is designed for selected racing bets where the Starting Price is bigger than the odds you originally took. On qualifying bets, William Hill settles the bet at the better of the two prices, subject to eligibility, opt-in and the promotion rules.

Offer Overview

Best Odds Guaranteed applies to qualifying bets on UK and Irish horse racing, with the source terms also stating that between 8 May and 14 June 2025 it applies to UK Greyhound Derby 2025 races only during that period. The core idea is straightforward: if you place a qualifying bet at William Hill prices and the SP is higher at the off, your return is calculated at that bigger SP.

The promotion is not a blanket offer for every customer. It is available by invite only, and invited customers must opt in. Once successfully opted in, the promotion applies on an ongoing basis unless William Hill cancels, withdraws or removes eligibility under its terms.

How It Works

For qualifying bets, the relevant window starts from 8:00am UK time on the day of the race and runs until the off. If you place a bet in that period and the SP is bigger than the price you took, William Hill pays out at the higher SP. If the SP is shorter, your original price stands.

The source example is a useful guide: if you back a runner at 4/1 and the SP returns at 5/1, settlement is at 5/1. If the SP returns at 3/1, settlement remains at 4/1.

The offer covers singles and multiples on qualifying races. Where a multiple contains some qualifying Best Odds Guaranteed selections, those legs are settled at the better of the taken price or SP, while the rest of the bet follows the normal rules for those markets.

Bets struck before 8:00am on the day of the race do not qualify in the same way. According to the source, those bets are settled at the price taken, or at SP if no price has been taken.

The terms also say that winnings are credited automatically once the qualifying bet settles, and any extra amount paid because of a bigger SP is shown in the settled bets section of the account.

Key Terms to Know

Best Odds Guaranteed is available on online and mobile bets placed at William Hill prices. The source says customers must opt in through the relevant Best Odds Guaranteed opt-in feature on race cards on the William Hill website or iOS and Android apps.

The promotion is available on the win market for UK and Irish horse racing, and the detailed terms also refer to win or each-way singles and multiples on the win market. Because the source includes both wordings, it is worth checking the specific market on the race card before placing a bet.

The offer does not apply to several bet types and markets, including:

• ante-post bets
• tote or Pari-Mutuel bets
• Each Way Extra
• Lengthen Your Odds
• place markets
• insurance bets
• betting without

It is also not available in William Hill shops, over the counter, on SSBTs or via telebetting.

There are some further restrictions to note:

• it is only available to eligible UK and Irish resident customers who have opted in
• if there is a non-runner and prices revert to SP, Best Odds Guaranteed does not apply
• player, payment method and country restrictions may apply
• customers previously informed of promotion restrictions will not be eligible

William Hill can also remove a customer's opt-in status or exclude them where it identifies a breach of terms, suspicious betting activity, account status changes such as self-exclusion or restrictions, or if the customer is no longer resident in an eligible jurisdiction.

A daily cap applies to the extra benefit from the offer. The additional amount paid because the SP is higher is capped at £25,000 per customer per calendar day. This cap applies only to the uplift created by the bigger SP, not to the original winnings based on the odds first taken.

The source also notes a specific rule where a Winnings Boost has been used: returns are settled at the greater of the boosted struck price or the SP without the boost applied.

Who This Promotion Suits

This promotion is most relevant to racing bettors who place bets on the day of the race and want some protection if the SP drifts out. It may appeal to those backing UK and Irish racing online or on mobile, especially if they regularly take an early price after 8:00am but before the off.

It can also suit customers who place singles and multiples on qualifying win selections, as the offer is not limited to single bets.

It is less suitable for anyone who mainly bets ante-post, uses excluded markets, prefers shop betting, or is not eligible for the invite-only opt-in.

Final Word

William Hill Best Odds Guaranteed is a practical racing promotion rather than a bonus-led offer. Its value lies in paying the bigger of the taken price or SP on qualifying bets, which can help when the market moves against your original price.

The main points to check are whether you have been invited, whether you have opted in, whether your bet is on an eligible market, and whether it is placed between 8:00am and the off. The exclusions are important, and the extra benefit is subject to a £25,000 daily cap. If you already bet UK and Irish racing with William Hill online or via the app, this is a promotion that can add value without changing how the bet itself works.