UK players are moving from phone bill deposits, which often charged £30 or more...

https://weekly-wiki.win/index.php/What_is_UK_Finance_and_Why_Does_it_Matter_for_Casino_Deposits%3F

UK players are moving from phone bill deposits, which often charged £30 or more per transaction, to Faster Payments and mobile wallets. These newer methods let you deposit as little as £10 instantly, with lower fees and better security