Updating bank information

Contact your bank manager by email or phone, ask him exactly what the bank requires from you to satisfy the records. When faced with a similar situation I did that, all they needed was my National Insurance number, I provided that by email, and the bank manager added the information to their records. Prior to Brexit your NI number was not required (the Spanish bank called it my Tax number) but in reality it was my NI number. Problem was easily solved. 

The number is your NIE number (número de identidad de extranjero - foreigner's identity number) not a TIN.   Then there is the TIE card (tarjeta de identidad de extranjero - foreigner's identity card) that is used by any non-Spanish person who is resident in Spain.

Marjon, instead of guessing just ask your bank manager, if you are a UK resident it will be your UK National Insurance Number.

Thank you all for your replies ,I have sorted my electricity bill out as had an email saying my bank had refused payment as I expected and was given the option of paying the bill online which I have just done .Out of interest I was given until the 6 March to pay it.Now hoping I can make a payment online to the water company .

I have had this exact same situation with Bankinter. I managed to sort it all in branch last week when I was over, but they asked for copies of

1) Passport - as we had bought our property 16 yrs ago, records on file were out of date

2) national insurance number (as per above in other posts this covers them for the 'tax number'

3) latest P60 - I queried why they needed this as I am a uk tax payer, not spain resident and was advised its because we have a spanish mortgage and they needed updated proof of inc provided

I was asked to provide all the above for my wife and I - they were happy for me to send relevant info by email, but as passports where about to be renewed where happy to wait a couple of months. Possibly as I communicated with them about my plans and passport situation, so appeared to have some flexibility on holding off putting a hold on the account.

In my branch (the one at Los Dolses) they had a member of staff it appeared dedicated to doing this, so maybe they are having a blitz after an audit of finding their records where not up to scratch.

Hope you solve it as easily as I did.

Barry