UK players used to top up casino funds via phone bill deposits, often limited...

https://planetfitnessprices.com/how-mobile-casino-deposits-have-evolved-from-phone-bills-to-instant-transfers/

UK players used to top up casino funds via phone bill deposits, often limited to around £30 each time. Today, Faster Payments and mobile methods let users move money quickly and securely, with minimum deposits as low as £10