ISIN Services
London Stock Exchange Group (LSEG) is the sole issuer for International Securities Identification Numbers (ISIN), Financial Instrument Short Name (FISN) and Classification of Financial Instruments (CFI) Codes for Great Britain, Jersey, Guernsey and the Isle of Man.
Access accurate, timely and reliable ISIN codes
With over 25 years’ experience in issuing accurate, timely and reliable ISIN codes to the market as the UK’s National Numbering Agency.
Being a founding member of the Association of National Numbering Agencies (ANNA), we aim to uphold the use of standard identifiers to make the financial world a more efficient, safer, and more stable environment for investors and the financial institutions that serve them.
Benefit from LSEG’s pre-allocated service.
Announcement
New ISIN FAQ Document is now available!
We are excited to announce the release of our comprehensive FAQ document, designed to address your most common questions and provide quick, helpful solutions.
ISIN Fees
London Stock Exchange Plc is the UK National Numbering Agency and a member of ANNA (Association of National Numbering Agencies). Our ISIN allocation jurisdiction covers Great Britain, Jersey, Guernsey & the Isle of Man.
We do not charge a fee for ISIN allocation and neither do we charge a fee for maintenance of the issued ISIN.
Please note, we have no dealings or affiliation with any third parties who offer ISIN application services.
A pop-up advisory note (below) has been issued by ANNA which appears on their website, https://anna-web.org .
The Association of National Numbering Agencies (ANNA) confirms that only official National Numbering Agencies (NNAs) can issue valid ISINs (International Securities Identification Numbers). The majority of NNAs do not charge for ISIN allocation and fees do not apply for maintenance/renewal of allocated ISINs. In the few instances where fees are charged for ISIN allocation, this is on a cost-recovery basis only, in accordance with ISO 6166 ISIN Registration Authority obligations. The same applies for CFI (Classification of Financial Instruments) according to ISO 10962 and FISN (Financial Instrument Short Name) according to ISO 18774.
ANNA and NNAs have no dealings or affiliation with any third party offering commercial services for assisting to obtain or maintain ISINs. Similarly, any threats from these organizations to purge a valid ISIN from certain systems if “maintenance fees” or other monies are not paid should be viewed with scepticism. To avoid incurring unnecessary costs, we strongly recommend requesting your ISIN, CFI, and FISN only from an official NNA. The process is very straightforward.
For any assistance in contacting the responsible NNA for your request please contact ANNA directly at secretariat@anna-web.org. Alternatively, contact the NNA responsible for your market to assist with your ISIN request.
The full list of official NNAs and their contact details can be found here.
Our ISIN services
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Useful links
Disclaimer
ISIN code issuance is a free service offered by the LSE.
London Stock Exchange plc (“the Exchange”) acting in its capacity as the National Numbering Agency (“NNA”) for the United Kingdom and a full member of the Association of National Numbering Agencies (“ANNA”) is the sole issuer of Great Britain (GB), Jersey (JE), Guernsey (GG) and the Isle of Man (IM) International Securities Identification Numbers (ISINs) pursuant to ISO 6166, and also an issuer of Classification of Financial Instruments (CFIs) pursuant to ISO 10962, and Financial Instrument Short Names (FISNs) pursuant to ISO 18774.
The Exchange shall conduct appropriate due diligence on any request for an ISIN. The determination of whether a security is eligible for an ISIN and whether the applicant has supplied appropriate documentation shall be made by the Exchange in its sole discretion and any such determination shall be final. The Exchange may, in its sole discretion and without notice, suspend or deactivate an ISIN. The Exchange shall have no liability in connection with a determination that a security is or is not eligible for an ISIN. The allocation of an ISIN to a particular security is not intended to be and should not be construed as an endorsement of such security, or an opinion as to the legal validity of such security.
The Exchange does not guarantee the accuracy, adequateness or completeness of any data associated with the ISIN and shall not be liable or responsible for any errors or omissions or for the results obtained from the use of any ISIN.
By submitting a request for an ISIN, the applicant: (a) warrants that they have the legal authority to request an identifier on behalf of the issuer of the security that is the subject of the ISIN; (b) warrants that all information supplied shall be true and correct in all material respects; and (c) acknowledges and agrees to this disclaimer.
The Exchange, acting in its capacity as the NNA for the United Kingdom, is: (a) permitted to request additional information and/or documentation from the applicant; and (b) authorised to contact intermediaries specified in the ISIN application form, letter granting authority and/or related documentation.
Request details
To learn more about our ISIN services, to register your email for updates and announcements from ISIN team, or to send us a query - please fill in the details and submit the form below.