Register for your Legal Entity Identifier (LEI)

Register for your Legal Entity Identifier (LEI)

What is the LEI initiative?

The Legal Entity Identifier (LEI) initiative is designed to create a global reference data system that uniquely identifies every legal entity or structure, in any jurisdiction, that is party to a financial transaction.

Endorsed by the G20, the establishment of a Global LEI System (GLEIS) is critical to improving measurement and monitoring of systemic risk. Global, standardised LEIs will enable regulators and organisations to more effectively measure and manage counterparty exposure while also resolving long standing issues on entity identification across the globe.  To aid global allocation of LEIs, Local Operating Units (LOUs) have been formed and must be sponsored by local regulators to assign and maintain LEIs to firms on a cost recovery basis.

The use of the LEI has been mandated by the European Securities and Markets Authority (ESMA) for the reporting of derivative transactions to Trade Repositories under European Market Infrastructure Regulation (EMIR).

What is the London Stock Exchange’s role?

London Stock Exchange have been sponsored by the FCA to issue and maintain LEIs globally following demonstration of our ability to meet the Financial Stability Board recommendations, as well as to adherence to the Principles endorsed by the Regulatory Oversight Committee.

What are the benefits of using the London Stock Exchange as a LOU?

Further to demonstrating our ability to perform as a LOU, our proven track record with reference data software solutions is further displayed in our LEI offering. Utilising our UnaVista platform, our service provides a number of benefits to you:

All LEI data in one place

The LEI user interface provides an advanced look-up service to access all LEI reference data in one database. You will be able to view, filter, manipulate and extract data which has been consolidated through a single tool.

Accuracy and reliability

The consolidated database ensures all LEI records are cross referenced before LEI creation to ensure avoidance of duplicate LEIs. Following this, entity validation against global sources is carried out, so you can be confident the LEI obtained is unique and accurate.


London Stock Exchange has contributed to the development of international standards for the financial services industry for many years and participated in the ISO process for the development and creation of ISO 17442:2012 – Legal Entity Identifier. Continued participation in LOU and international standards working groups ensures we have the most current subject matter knowledge.

As the UK’s National Numbering Agency for provision and maintenance of ISIN and CFI reference data, we have over 20 years experience in validating and maintaining data and will use this experience to provide you with high quality data and knowledgeable customer service.

Advanced functionality

LEIs will be allocated using the Exchange’s hosted matching and reconciliation platform, UnaVista. Users can register to access UnaVista to search the database from anywhere in the world as well as request LEI allocation. UnaVista also offers a wide range of advanced functionality including:

  • Self-registration – Set yourself up quickly and simply

  • Advanced search and filter – helps you find the information you need quickly

  • Challenges – assists with the proactive maintenance of entity data

  • Easy to use interface – very little training required

  • Interactive dashboards – get an overview of the data in a view that suits you

What is the cost of obtaining an LEI?

London Stock Exchange will be charging fees on a cost recovery basis. For a full breakdown of the pricing visit the LEI home page here.

How to register for an LEI

Registration for individual LEI allocation requests will start on 5 August 2013. Bulk upload functionality will be available shortly after for those who require 10 or more LEIs to be allocated. You can register for your LEI here.

Where you can find out more information

For more information view our London Stock Exchange Group FAQ on LEIs, email us at, or fill out the form below.