The UK Gambling Act 2005 and the UK Gambling Commission set a clear framework...

https://direct-wiki.win/index.php/Why_Do_Online_Casinos_Have_Deposit_Limits_in_the_UK%3F

The UK Gambling Act 2005 and the UK Gambling Commission set a clear framework for online casino rules. This model requires operators to keep player funds separate from their own money, ensuring your deposits are protected