UK players used to deposit at casinos through phone bills, often limited to...

https://sergiosbestnews.cavandoragh.org/why-do-casinos-say-deposits-are-instant-but-my-balance-updates-slowly

UK players used to deposit at casinos through phone bills, often limited to around £30 per transaction. Now, Faster Payments and mobile options let them transfer money instantly and securely, with minimum deposits as low as £10