IBAN example · GB
UK IBAN example
This page gives you a sample UK IBAN that passes all ISO 13616 checks — correct character set, exactly 22 characters, and MOD 97 check digits that yield a remainder of 1. This UK IBAN is a synthetic test value for forms and integrations, not a real account. Use it for payment-integration tests, form demos, or to learn how a GB IBAN is structured. It does not map to a real bank account, so never send money to it. Below you will find the full IBAN, a field-by-field breakdown, notes on testing, and the SWIFT/BIC code you would pair with it for a complete cross-border payload.
Field-by-field breakdown
The breakdown below splits the sample UK IBAN (GB29NWBK60161331926819) into its country code, check digits, and BBAN fields, applying the 4!a6!n8!n pattern so each field is labeled with its length and allowed characters. This is the same field-by-field view the IBAN validator produces for any GB IBAN you paste, so you can compare a real UK IBAN against this reference structure.
How to use this UK IBAN example
A common use case is testing a payment form that accepts UK IBANs: paste the sample into your form to confirm it accepts 22-character GB input and rejects malformed values. You can also load this example straight into the IBAN validator to see the green check, or open the UK IBAN format page for the full structure spec. For end-to-end testing of a cross-border flow, pair this IBAN with the receiving bank's SWIFT/BIC code.
Reading the UK IBAN structure
Reading the sample UK IBAN left to right: the first two characters (GB) are the ISO 3166 country code for United Kingdom; the next two are the MOD 97 check digits, chosen so the whole number passes the checksum; and the remaining 18 characters are the BBAN, which encodes the bank and account under United Kingdom's national format. Because the BBAN layout is fixed for United Kingdom, you can predict which characters are the bank code and which are the account number just from the 4!a6!n8!n pattern — and that is exactly what the field-by-field breakdown below shows.
Testing with this UK IBAN
For QA and integration work, this UK IBAN example is most useful in three places. In a payment form, paste it to confirm the field accepts 22-character GB input and rejects values that are too short, too long, or have a bad country prefix. In a MOD 97 unit test, assert that the example returns a remainder of 1 and that flipping any single digit makes it fail. In an end-to-end test, pair the IBAN with a United Kingdom SWIFT/BIC code so the full wire payload looks realistic. Because the example is synthetic, it will never collide with a real United Kingdom account, which makes it safe to commit to test fixtures.
UK IBAN example and SWIFT codes
If you are testing a full international payment into United Kingdom, you will usually need a SWIFT/BIC code alongside this IBAN. The United Kingdom SWIFT codes page lists the major United Kingdom banks and their head-office BICs, so you can build a realistic GB wire payload around this UK IBAN.
UK IBAN example FAQ
- Is this UK IBAN example real?
- No. It is a synthetic value generated to pass MOD 97 and the 22-character GB length check. It does not correspond to any real United Kingdom bank account, so it is safe for test fixtures and demos but must never be used for an actual transfer.
- Why use a synthetic UK IBAN instead of a real one?
- Real UK IBANs are private account identifiers; publishing one would expose a customer's account. A MOD 97-valid synthetic example gives you the same format and checksum behavior for testing without touching any real account.
- Can I load this GB example into the validator?
- Yes. The "Validate this example" link below loads this sample straight into the IBAN validator so you can see the green check and the full breakdown, exactly as a real UK IBAN would render.
- What do I pair with a UK IBAN for a wire?
- For most cross-border payments into United Kingdom you need the IBAN plus the receiving bank's SWIFT/BIC code. This UK IBAN example covers the account side; look up the bank's BIC separately to complete the wire instructions.