UK online casinos operate under strict rules set by the UK Gambling Commission,...

https://businessmodelanalyst.com/the-uk-online-casino-business-model-revenue-streams-regulation-and-competitive-dynamics/

UK online casinos operate under strict rules set by the UK Gambling Commission, which helps protect players and ensure fair play. Despite these regulations, many games offer a return-to-player rate around 96%, meaning the house still makes a steady profit