How do I find my Trading 212 ISA account number?
The only way I managed to find it was on the contract note statements you get sent my email. It includes the account number near the top under account name.
Go to through menus of manage funds, deposit funds, change, bank transfer. Your account number will be displayed as part of the depositing information. That’s a bit of a weird method, but it works.
Is it the reference number that shows up?
What Richard mentioned is correct.
Also see a post I made highlighting this topic.