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

https://sergiosbestnews.cavandoragh.org/what-are-good-alternatives-if-i-used-to-rely-on-phone-bill-deposits

UK players used to top up casino accounts with phone bill deposits, often limited to around £30 per transaction and charged high fees. Now, Faster Payments and mobile wallets let users deposit from £10 with instant, low-cost transfers