You are in control - if you don't want to use third party providers, you don’t have to. If you don’t want TPPs to access your account, you don’t need to do anything. These services will be available to Tesco Bank Current Account, Credit Card, Instant Access Savings Accounts and Internet Saver customers, but it is your choice whether or not you use them.
If you do wish to use a TPP, you may have to share your online banking security details to allow them to access your account. Before you use a TPP you should check with them that they are authorised to undertake the services for you, that you trust them with your account, and you are clear what accounts they have access to and what they are using your data for.