UK players have moved from phone bill deposits, often limited by low amounts...
https://www.kilobookmarks.win/uk-players-used-to-rely-on-phone-bill-deposits-often-limited-to-30-per
UK players have moved from phone bill deposits, often limited by low amounts like £10 minimums, to Faster Payments and mobile wallets. These modern methods let you fund your account instantly, usually without extra fees