The UK’s Advertising Standards Authority (ASA) has issued a warning to Marathon Bet over a misleading promotion which failed to make clear that a portion of a customer’s winnings would be paid out in free bets. promoted the offer during March for new customers for the Cheltenham Festival.

The promotional text stated: "New customer offer ... 2/1 Willie Mullins top trainer...” Smaller text underneath stated: "Max bet £10. Minimum stake £5. Only £5 of your bet paid at 2/1 odds. Enhanced price paid as a free bet…”

One complainant, who believed the conditions of the offer were not clear, challenged whether the ad was misleading.

Premium subscribers continue here to the full article.