UK players are moving away from phone bill deposits, which often had limits...

https://www.romeo-bookmarks.win/uk-players-used-to-top-up-casino-accounts-easily-via-phone-bills-but-now

UK players are moving away from phone bill deposits, which often had limits like £30 per transaction, to Faster Payments and mobile methods. These newer options offer quicker transfers and lower minimum deposits, sometimes just £10