You will see a "Switch to Open Banking” button against all providers with connections available.
However, not all savings accounts come under PSD2 (the legislation requiring banks to make your account information more accessible to you) so you might not be able to migrate all your accounts to an Open Banking API just yet. With savings accounts a good rule of thumb as to whether your bank will provide an Open Banking API connection is if you can currently make payments directly from your savings account to another third party account.
When you select to connect your account your bank will show you which accounts you can connect via API.
Unfortunately our system cannot identify in advance whether your savings account will be available via an Open Banking API yet. We took the decision to offer you the switch option in case it is available to ensure you can switch as many accounts as possible.
However this means you might see a button on an account your bank doesn't offer when you go to switch.
We will continue to provide connections to as many accounts as possible, opening up new Open Banking API connections as soon as they are available.
The list of banks with Open Banking Connections available can be found here