You’ll still be able to receive payments to your old 'GB' IBAN until 30 September, 2021. To help make this transition smoother, we have implemented a redirection service which will ensure that any payment received to your old 'GB' IBAN will be delivered to your new IBAN starting with 'LT' and extended the deadline by three months (originally 30 June, 2021).
However, European banks may impose a fee for making payments to 'GB' IBANs after December 31st, 2020. So it is advisable to make the change as soon as possible.
We will inform you by email each time you receive a payment directed to your old 'GB' IBAN. While you will still get your payment, this will remind you to inform counterparties that your IBAN has changed.