Who Needs an LEI in the UK? A Company Checklist

Who needs an LEI in the UK? A company needs one when an applicable reporting rule or a counterparty requires it – notably before a UK investment firm provides a service that triggers a transaction report for an eligible company client. Other requirements depend on the activity and jurisdiction; holding an LEI is not a blanket requirement for every company.

What this means in the United Kingdom

Under UK MiFIR – Regulation (EU) No 600/2014 as it forms part of UK law – Article 26(6) requires investment firms to use a legal entity identifier to identify legal-person clients in transaction reports. legislation.gov.uk – UK MiFIR Article 26 sets out that reporting requirement. For a UK limited company investing surplus cash through a broker, the practical question is whether its trade triggers a transaction report.

UK RTS 22 – Regulation (EU) 2017/590 as it forms part of UK law – Article 13(2) says an investment firm must obtain an eligible client’s LEI before providing a service that triggers such a report. This is the basis for the practical rule often called “no LEI, no trade”; see legislation.gov.uk – UK RTS 22 Article 13. A company should therefore check its LEI before asking its broker to execute a reportable trade.

Derivatives are a separate case. Under UK EMIR – Regulation (EU) No 648/2012 as it forms part of UK law – Article 9, counterparties report derivative contracts to a trade repository. The FCA, or the Bank of England for CCPs, may make technical standards whose data standards include at least LEIs. A UK firm hedging currency risk with forwards should check its reporting arrangements against legislation.gov.uk – UK EMIR Article 9.

For a UK company, an LEI issuer validates reference data against its company number using Companies House – Find and update company information. LEIFast is a Registration Agent of WM Datenservice, a GLEIF-accredited issuer; it does not issue LEIs itself. At the prices checked on 5 November 2026, LEIFast – Pricing lists £45 for 1 year, £117 for 3 years and £165 for 5 years, with the GLEIF fee included and tax added where required.

Who needs an LEI: the practical checklist

A Legal Entity Identifier is a unique 20-character alphanumeric code based on ISO 17442. Each code identifies only one entity and links to reference data from authoritative local sources; that data is free to access through GLEIF – The Legal Entity Identifier (LEI). The activity behind the request matters more than the company’s size or type.

• Is your company trading a reportable financial instrument through an investment firm?
• Is it a counterparty to a derivative that must be reported?
• Is it involved in securities financing under EU rules, or supplying ICT services to an EU financial entity?
• Has the requesting bank, broker or client explained which reporting requirement it must meet?

Situation	Rule and LEI requirement	Who may ask
Reportable securities trade by a UK company	UK MiFIR and UK RTS 22 require the investment firm to obtain an eligible legal-person client’s LEI before the report-triggering service.	UK investment firm or broker
Reportable securities trade through an EU investment firm	Regulation (EU) No 600/2014 (MiFIR), Article 26(6), requires the LEI in the report. Delegated Regulation (EU) 2017/590 (RTS 22), Article 13(2), requires the firm to obtain it first.	EU investment firm or broker
Derivative reporting	UK EMIR governs UK reporting. For EU counterparties, Regulation (EU) No 648/2012 (EMIR), Article 9(1), requires reporting; Implementing Regulation (EU) 2022/1860 (EMIR reporting), Article 3, specifies LEI identification and renewal of relevant reference data when reporting.	Counterparty or reporting provider
EU securities financing transaction	Regulation (EU) 2015/2365 (SFTR), Article 4, requires reporting and includes LEIs in the reporting format.	Reporting counterparty
UK legal-person ICT provider to an EU financial entity	Under Implementing Regulation (EU) 2024/2956 (DORA register of information), Article 3(5), an EU financial entity uses only an LEI to identify a legal-person provider established outside the Union.	EU financial-entity client

When an LEI is used only where available

Not every reference to an LEI creates a duty to obtain one. Under Regulation (EU) 2023/1113 (transfers of funds and crypto-assets), Article 4, the current LEI of the payer and payee is carried where it exists; an available equivalent official identifier can be used in its absence. This EU provision does not itself require a company to register an LEI.

Likewise, Regulation (EU) 2024/886 (instant payments), Article 5c(1)(b), allows a payer’s bank to offer payee verification using an IBAN with an identifier such as an LEI, EUID or fiscal number. It is an option, not an obligation to hold an LEI.

Regulation (EU) 2024/1624 (AMLR) will apply from 10 July 2027. Its Article 22(1) calls for obliged entities to collect a legal-entity customer’s LEI where available; it does not oblige the customer to obtain one. These are EU provisions, not additional UK-wide LEI requirements.

Who usually does not need one?

A company outside the relevant trading, derivatives and other reporting situations should not assume it needs an LEI merely because it exists. Nor does an EU payment message or the future AMLR “where available” provision, by itself, settle the question. A counterparty may still request an LEI for its own applicable obligations, so ask what activity and rule prompted the request.

If a UK company’s situation spans UK and EU activities, check the relevant requirements with its regulator or adviser. The rules above should not be treated as interchangeable across jurisdictions.

How to check, register and keep an LEI current

1. Search the company in GLEIF LEI Search before applying. It is a free public lookup that shows the LEI record and its status, including ISSUED or LAPSED. For more on checking a UK company record, see the UK LEI lookup guide.
2. Compare the record with the company’s reference data. If it needs correction, review how to correct UK LEI data before relying on it for a transaction.
3. If the company has no LEI, contact an issuer accredited for its jurisdiction. GLEIF says it need not be based in the same country; see GLEIF – Get an LEI: find LEI issuing organizations.
4. If an LEI already exists, check its status and the requester’s requirements rather than applying for a second code. If the company wants to change who manages its existing LEI, consult the LEIFast LEI transfer page.

If a reportable trade or another identified requirement is approaching and the company has no LEI, check its company details and use the LEIFast order form to register a new LEI before the counterparty needs the code.