There are 3 ways in which Tide members can identify if they have a PPS or ClearBank account:
Sort Codes: If the sort code is 04-06-05 - the account is with ClearBank, if the sort code is 23-69-72 - it is with PPS
Statements: The footer of members' statements will give details of the account provider and terms
By requesting an Account Verification Letter (AVL) from Tide