For each of your Barclays UK bank accounts you will find your International Bank Account Number (IBAN) printed on your bank statement. Alternatively, you can create the IBAN here (please note, you cannot create IBANs for your beneficiaries’ accounts - you must contact the beneficiary to obtain their IBAN).
You will need to provide your payer with the valid IBAN for your account together with the Barclays SWIFTBIC (Bank Identifier Code) which is BARCGB22. The payer should then include your IBAN and the SWIFTBIC in their payment instruction to their bankers to ensure the payment is processed to your account as quickly and efficiently as possible.