If you’re looking to make an international payment to an HSBC account in the UK, you’ll need the correct IBAN. The typical HSBC IBAN number in the UK starts with GB, followed by two check digits, then 40 (HSBC’s bank code), and finally the account number padded to 14 digits. For example: GB29HBUK40127612345678. Always confirm the IBAN with your bank or the recipient before sending money.