They could get this from banks already.
> Retailers would presumably save by not having to pay fees to Visa, MasterCard, Stripe, etc.
These are already low in Europe due to regulation.
No they can't.
> These are already low in Europe due to regulation.
For sure, it's not going to save vast amounts of money. The original comment said "I already have a digital pound in my bank account". I am merely pointing out that though it may seem entirely frictionless and free to spend online already, there are costs involved.
What do you mean "can't"? My bank certainly has the information, since I can see it online if I log in. Of course they would have to change the law, but this also goes for the digital pound.