UK players used to top up casino accounts through phone bill deposits, often...

https://wiki-canyon.win/index.php/Which_Is_Quicker_on_Mobile:_PayPal_or_Bank_Transfer_for_Casino_Deposits%3F

UK players used to top up casino accounts through phone bill deposits, often limited to around £30 per transaction. Now, Faster Payments and mobile methods let them add as little as £10 instantly