Accumulator mechanics
The combined decimal price is produced by multiplying the price of each leg. One losing leg normally loses the full accumulator; a void leg is usually removed and the price recalculated under house rules.
Accumulator versus Bet Builder
William Hill's Bet Builder is documented. A standard accumulator combines outcomes from different events; a Bet Builder combines compatible outcomes from one event.
Offer restrictions
18+. New UK customers only. First deposit of £10+, then place a £10 single bet from main balance at odds of 1/2 (1.50)+ on any sports market (excluding Virtuals). £30 in Free Bets credited as 3 x £10 after qualifying bet settles. Free Bets valid on any sports market (excl. Virtuals), expire in 7 days, non-withdrawable and must be used in full (£10 each). Deposits via PayPal, Neosurf, Paysafe, Apple Pay, NETELLER, Skrill, ecoPayz, Kalibra/Postpay and WH PLUS Card excluded. One per customer. Full T&Cs apply. begambleaware.org. #ad Check whether a promotion requires a minimum number of legs or minimum price per leg.
Sources checked
Operator-owned information reviewed 1 August 2026. Product pages and terms can change.