UK players used to rely on phone bill deposits, often capped around £30 per...

https://blogfreely.net/teresa-long85/why-could-you-not-withdraw-to-a-phone-bill-deposit-method

UK players used to rely on phone bill deposits, often capped around £30 per transaction, making quick top-ups easy but limited. Now, Faster Payments and modern mobile methods let players deposit £10 or more instantly