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IBAN format · GB · 22 characters

United Kingdom IBAN format & validator

Validate a United Kingdom IBAN

?

Type or paste a IBAN

Reference

About United Kingdom IBANs

An IBAN consists of a two-letter country code, two check digits and a Basic Bank Account Number (BBAN). A BBAN includes information about the domestic bank and account number. The IBAN print format adds one space after every four characters whereas the electronic format contains no spaces.

What this tool checks

We verify the country prefix, length, allowed characters, and the mod-97 check digits — the same structural validation banks run before submitting a transfer. We do not verify that the account actually exists; only your bank can do that at the moment of transfer.

About this data

Country specifications are sourced from the SWIFT IBAN Registry. Lengths, segment layouts, and SEPA membership reflect the published standard.

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