In the process if transferring my ISA to 212, and it’s asking me for my 212 ISA account number. I have a statement which states my regular account number, is this the same thing?
No. These are different numbers. You can find the number of your ISA account by starting a deposit and start changing the method to bank transfer. You will see account number displayed as a reference number. After making a note of it you can abort the deposit method change.