Bookmakers Coral, Ladbrokes, William Hill and Sky Bet have all signed up as Racing UK's premium partners in a new one-year deal.
The partnership, which starts on February 1, means the four major bookmakers will receive significant exposure on Racing UK's various platforms, including through the TV channel, online, print and promotional activities.
Racing UK commercial director Nick Mills said: "We are delighted to have signed with these four leading bookmakers and are extremely grateful for their support of the channel in what is still a testing economic climate.
"We have enjoyed excellent relationships before with channel partners Coral, Ladbrokes and Sky Bet and are delighted to welcome William Hill on board too. It should be an exciting and fruitful 12 months ahead."
Racing UK broadcasts horse racing from 30 (33 from May 1) of the leading British racecourses and currently has 50,000 subscriptions.