EX-PATS could miss out on their UK pensions due to new EU regulations, the UK Department of Work and Pensions (DWP) has warned.
From January 31 the DWP will need an International Bank Account Number (IBAN) and a Bank Identification Code (BIC) to make payments to expats across the eurozone.
The new rules are being introduced to make payments between EU countries faster and more secure.
The DWP already holds IBAN and BIC details for most customers, but those that need to provide the details will soon be contacted by letter.
A spokesperson for the British Embassy in Madrid said it is essential customers return their details as soon as possible to ensure their payments are not stopped.
Those affected to can get their IBAN and BIC from their bank, or a bank statement. They are being advised not to hand over passwords, or any other details relating to their bank account.
Ex-pats who have their pension paid into a UK account are not affected by the legislation.