It's certainly less of a problem. But people are notoriously lazy, and a service where you could switch savings accounts in the same way as a current account wo

It's certainly less of a problem. But people are notoriously lazy, and a service where you could switch savings accounts in the same way as a current account would make it more likely. It's the cost / benefit trade-off, so if differences in interest rates are very small you need to make it even easier for people to switch. For example, I'm being paid 0.3% on a current-acount-linked savings account. If I could switch that to NS&I (1%) more simply than I can currently, I would. But given the relatively low amount in the account, and how much I feel my time is worth, it just doesn't feel worth it to me. Yeah, I'm lazy. But so are lots of other people, and it would change the dynamics of the savings account market if it was easy enough to make me want to switch.