Winning Boost in Racing Bet Builder

William Hill customers have another way to increase potential returns with the 25% Racing Bet Builder Winnings Boost.

Available for a limited time, this offer lets you enhance the odds on your horse racing Bet Builder and get more value from your selections.

• Create your own bet using the racing bet builder at William Hill today!

What is it?

The 25% Racing Bet Builder Winnings Boost allows customers to boost the odds on a qualifying horse racing Bet Builder by 25%.

This promotion runs from 00:01 (UK time) on Monday 30th March 2026 until 23:59 (UK time) on Sunday 5th April 2026. During the Promotion Period, customers can claim one 25% Racing Bet Builder Winnings Boost per day.

When applied, the boost increases the odds on your qualifying Bet Builder, meaning the enhanced odds and potential returns will be shown on your betslip before you place the bet.

What is a Racing Bet Builder with William Hill

William Hill’s Horse Racing Bet Builder lets customers take control of their betting like never before. Rather than placing separate bets on individual outcomes, you can combine multiple selections within the same race into a single bet.

For example, you could back a horse to win, predict another to finish in the top three and even add a market such as winning distance – all in one bet on the same race at any racecourse. This allows you to build a more customised bet and potentially increase your odds depending on the selections you include.

Click HERE for the William Hill Horse Racing Bet Builder Guideline.

How the Winning Boost works

Follow these simple steps to use the offer:

1. Add any horse racing Bet Builder with 3 or more selections at total odds of 6/4 (2.50) or bigger to your betslip.
2. Click into the betslip “Rewards” section and select the “25% Racing Bet Builder Winnings Boost” to apply the promotion.
3. Place a Qualifying Bet (a real money stake of up to £/€20) on that horse racing Bet Builder.
4. The increased odds and potential returns from the Winnings Boost will be displayed in the betslip before you confirm the bet.

Conditions

• Promotion runs from 00:01 (UK time) on Monday 30th March 2026 until 23:59 (UK time) on Sunday 5th April 2026.
• Customers can use one 25% Racing Bet Builder Winnings Boost per day during the promotion period.
• The boost must be applied to a horse racing Bet Builder with 3 or more selections at total odds of 6/4 (2.50) or bigger.
• A Qualifying Bet is a real money stake of up to £/€20, placed online via the website or mobile app using your main balance.
• The boost must be selected in the Rewards section of the betslip before placing the bet and cannot be added afterwards.
• Free bets are not eligible and cannot be used with the promotion.
• The boost applies to one Bet Builder only, is non-transferable, and not available in shops.
• Available to customers resident in the UK & Ireland.

Click here for full terms and all conditions.