UK online casinos operate under strict rules from the UK Gambling Commission...

https://www.first-bookmarkings.win/uk-online-casinos-operate-under-strict-rules-set-by-the-uk-gambling-commission-2

UK online casinos operate under strict rules from the UK Gambling Commission that aim to keep play fair and safe. Despite a typical 96% RTP, casinos still turn a profit through careful game selection and efficient payment processes