William Hill NFL Bet Builder Winnings Boost

William Hill is offering all customers a Bet Builder Winnings Boost on selected NFL games. The promotion runs from September 8, 2026, at 00:01 until February 14, 2027, at 23:59, providing participants with a boost size ranging from a minimum of 25% up to a maximum of 50%.

To claim and qualify for the bonus, users must first register or log into their William Hill account. Next, they need to add a Bet Builder for a selected NFL Qualifying Game featuring 3 or more selections and total odds of 3/1 (4.00) or greater to their betslip. Before confirming the wager, customers must open the betslip Rewards section and select the «Bet Builder Winnings Boost», then place a real-money qualifying bet using their main account balance with a stake of up to £20. Free bets cannot be used to fund qualifying bets.

Each customer is restricted to one NFL Bet Builder Winnings Boost per Qualifying Game, and the offer cannot be combined with any other promotions. The increased odds and potential returns will be clearly displayed in the betslip prior to placing the bet. Furthermore, if a cash out option is offered, its value will be calculated based on the original price rather than the boosted price.