United Kingdom IBAN
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Your bank’s statement is the binding source of your IBAN. Calculated from the SWIFT IBAN Registry, updated September 17, 2026. Not a service of any bank. · Disclaimer
An IBAN from United Kingdom has 22 characters. Enter the bank code, sort code and account number above to calculate one, or switch to “Check” to test an IBAN you have.
How an IBAN from United Kingdom is built
The registry’s example, GB29 NWBK 6016 1331 9268 19, split into its parts:
- CountryGB
- Check digits29
- Bank codeNWBK
- Sort code601613
- Account number31926819
| Part | Positions | Format | In the example |
|---|---|---|---|
| Country | 1–2 | 2 letters | GB |
| Check digits | 3–4 | 2 digits | 29 |
| Bank code | 5–8 | 4 letters | NWBK |
| Sort code | 9–14 | 6 digits | 601613 |
| Account number | 15–22 | 8 digits | 31926819 |
What the parts are called in United Kingdom
A UK IBAN has 22 characters: GB, two check digits, a 4-letter bank code, the 6-digit sort code and the 8-digit account number.
The bank code is the first four letters of the bank’s BIC (NWBK, BARC, LOYD, HBUK…). It is not part of the sort code, so you need it from a statement or the bank. We check the format of a sort code but do not look up bank names: there is no free, complete public list.
The check digits of GB29 NWBK 6016 1331 9268 19
- Move the first four characters to the end: NWBK60161331926819GB29
- Replace each letter by a number (A = 10, B = 11 … Z = 35): 2332112060161331926819161129
- Divide that number by 97. The remainder is 1; a valid IBAN always leaves 1.
- To calculate the check digits instead, put 00 in their place: the remainder is 69, and 98 − 69 = 29.
Registry facts
- SEPA
- yes (per SWIFT IBAN Registry)
- IBAN also used in
- Isle of Man, Jersey, Guernsey
- IBAN in use since
- April 2007
- Format last updated
- May 2017
- Registered by
- Payments UK Management Ltd
Questions people ask
How many characters does an IBAN from United Kingdom have?
22: the country code, 2 check digits and a 18-character national number (4 letters + 6 digits + 8 digits).
Can I use an IBAN instead of a sort code in the UK?
For payments within the UK, banks use sort code and account number. The IBAN is for payments from abroad.
Do Jersey, Guernsey and the Isle of Man use GB IBANs?
Yes, the registry lists them under the GB format.