18+. Play Safe. casino gaming for the first 24 hours you spend on TwinSpires Looking for promotions offers and bonus opportunities with the best place to. $ NEW MEMBER BONUS. . Sign up to William Hill using promo code R30, bet £10 and get 3 x £10 free bets. Use promo code MATCH to earn up to a $ deposit match, and bet any track, anywhere, any time. From on 3x £.