When a major horse racing festival comes around and high-profile racehorses take to the track, it’s common these days to put your fancies together in an acca. Leading online bookmakers like Betfred know this and will allow you to place multiples and system bets that help you enhance the odds and win bigger. Learn if they were awarded as being the best bookmaker for horse racing accumulators by Horsebetting.com readers by looking at our annual awards.