The best betting sites credited for their competitive odds include Ladbrokes, Betfred, Interbet, Bet365, Coral, MansionBet, BoyleSports, Dafabet, Unibet and 10Bet. However, some betting sites are known for offering the best odds on specific markets. For instance, William Hill has forged a name for itself for being the number one destination for great horse racing odds, especially on high-profile events such as the Grand National, Royal Ascot and Cheltenham Festival.