Cashback sites have been accused of encouraging gambling by rewarding customers for betting online.
Topcashback, Quidco and Ohmydosh all offer cashback for a range of services and purchases.
But Money Mail found they were promoting more than 60 gambling, bingo and betting sites between them.
Addictive: Topcashback, Quidco and Ohmydosh were found to be promoting more than 60 gambling, bingo and betting sites between them
Topcashback has boasted of paying out £30,000 in a month to customers who signed up with one gambling site. It currently pays new customers £55 if they wager at least £10 with Bonus Kings.
Rival site Quidco pays new Coral Casino gamblers £40 as long as they bet at least £10.
Meanwhile, eight out of 23 of Ohmydosh’s ‘higher earner’ deals are for gambling or bingo sites.
Shadow gambling minister Alex Davies-Jones says: ‘Websites that lure consumers in with supposedly lucrative cashback offers incentivise further game play and are an increasingly worrying trend.
We are in a cost of living crisis, with many people across the UK worrying about their earnings and the rising energy prices.’
Sue Anderson, of debt charity StepChange, says: ‘Gambling firms shouldn’t exploit people’s vulnerabilities, such as compulsion or addiction, yet there are still many mechanisms through which people can be “hooked”, including incentives offered via cashback sites.’
A Topcashback spokesman says it will be reviewing its gambling category, adding: ‘We acknowledge more can be done to encourage responsible gambling.’
A Quidco spokesman says: ‘We expect consumers to gamble responsibly.’