The Admission Journey - key steps to complete transactions

What it is: A unique 20-character code that identifies your company globally in financial markets.

Do you need it? Yes – required for all issuers.

When to apply: First step – apply as early as possible.

How to apply:

• Apply via Legal Entity Identifier (LEI) User Guide Search and Request LEI (PDF)
• Alternatively, see LEI information page
• Contact: LEI@lseg.com

What it is: An ISIN is a unique 12-character alphanumeric code, where the first two characters denote the country code of the issuer (or, for debt instruments, the place of deposit).

Do you need it? Yes, an ISIN is required for any instrument which intends to list or trade on our markets.

• Equity → One ISIN per instrument class
• Debt → One ISIN per instrument (if not fungible)
• ETP → One ISIN per instrument

When to apply: LEI is mandatory and must be obtained before submitting an ISIN application (typically at least one month prior to admission). If already issued, the ISIN application can be submitted within the same timeframe.

How to apply:

• For queries on ISIN applications, allocation jurisdiction, or UK ISIN data, contact the ISIN Services Team
• Email: isinrequests@lseg.com Webpage: ISIN
• Register for a free Data Solutions account at www.sedol.co.uk, select Request UK ISIN button, set a Pegasus password, and submit your application. (See UK ISIN application process document (PDF))

Important notes:

• Draft security documentation is acceptable; final versions must be provided as soon as possible
• If ISIN allocation falls under a different NNA, please refer to ANNA Members & Partners - A Global Community to obtain contact details
• If a confidential ISIN is requested, it is the responsibility of the Requestor to notify the team when confidentiality should be removed

What it is: A SEDOL is a 7-character alphanumeric code assigned to an instrument at country and market level, with one SEDOL allocated per country.

If a confidential SEDOL is requested, it is the responsibility of the Requestor to notify the team when confidentiality should be removed.

Do you need it? A SEDOL is not a legal listing requirement but is operationally essential for LSE trading and market data.

Key points:

• Usually assigned once an ISIN exists
• You may have multiple SEDOLs for one ISIN (e.g. different currencies or trading lines)

When to apply:

• A SEDOL may be requested once an ISIN is assigned by a non-UK NNA; if allocated by the UK NNA, the SEDOL is issued simultaneously with the ISIN
• A SEDOL application must be submitted at least one month prior to admission

How to apply:

• The SEDOL Services Team no longer accept direct applications via email. See My SEDOL - New SEDOL Allocation process document (PDF)
• For queries on SEDOL creation process, My SEDOL training, or SEDOL data changes, contact the SEDOL Services Team: smfdb@lseg.com
• For queries regarding SEDOL Licensing and access to SEDOL data, contact the SEDOL Licensing team: SEDOL@lseg.com
• For more information, you can view the SEDOL webpage
• Action required: Both SEDOL Masterfile Licence holders and unlicensed My SEDOL users must register for a free Data Solutions account at www.sedol.co.uk, then use My SEDOL Chat to request SEDOL create permissions (granted after training completion). Masterfile Licence holders must include their Customer Reference ID in the registration. Once access is granted, both user types can create Coded or Confidential SEDOLs as required

What it is: Your ticker code used for trading and display on the Exchange.

Do you need it? Yes – required for trading.

What this means in practice:

• Equity → One ticker per line
• Debt → Assigned even if less visible
• ETPs → Multiple tickers for multi-currency listings

When to apply: Early in the process to secure your preferred ticker.

How to apply: Apply via the Admissions Self-Service Portal (SSP).

What it is: ANNA is the Regulatory Authority for all National Numbering Agencies (NNAs) and ANNA Partners across the globe.

Do you need it? Yes, to identify the correct National Numbering Agency (NNA) that ISIN allocation would fall under (if not under the UK NNA).

When/how to use:

• If ISIN allocation falls under a different NNA, please refer to ANNA Members & Partners - A Global Community to obtain correct contact details
• Submit an ISIN application to the specified NNA only

What this is: KYC starts with submitting an Early Notification (EN) form, which provides key details about your company and transaction. This allows the Exchange to begin KYC checks in parallel with the FCA prospectus review, helping avoid delays.

Do you need to submit an EN? Yes – required for new applicants. Applies to standalone listings and programme establishments.

When to submit:
Submit your EN to en@lseg.com:

• Equity: at least 20 business days before admission
• ETP: at least 20 business days before admission
• Debt: at least 5 business days before admission

Key takeaway: Submit early — this is one of the first formal steps in the admissions process and runs alongside FCA review.

What this is: KYC also starts with an Early Notification (EN) form under AIM Rules.

Do you need to submit an EN? Yes – required for all AIM admissions.

When to submit:

• Submitted by your Nominated Adviser (Nomad)
• Sent to aimregulation@lseg.com
• Must be submitted in good time before admission

Key takeaway: Your Nomad manages this step, but you must provide the required information early to avoid delays.

What this is: KYC is completed as part of the document review process (no separate EN form required).

Do you need to submit an EN? No – EN is not required.

What you need to submit instead:

• Draft admissions particulars
• Relevant application checklist
• Any derogation requests

When & how to submit:

• Submit documents to ISMapplication@lseg.com
• Done alongside document review process

Key takeaway: KYC is integrated into your application — ensure documentation is complete and submitted early.

Do you need to publish before admission? No.

What you must do:

• Coordinate with your nomad the timing of release of the pre-admission announcement which is published by the Exchange in line with AIM Rules
• Follow the AIM timetable (set with your Nomad)

Key takeaway: from admission an AIM company must comply with its disclosure obligations.

Do you need to publish before admission? Not mandatory by default.

What you may do:

• Use an Intention to Float (ITF) announcement
• A market-led communication tool
• Common for IPOs to signal a potential transaction and begin investor engagement

At admission: Most announcements (except “New Company”) should be published before admission.

Key takeaway: RNS is typically the provider of choice for regulatory announcements, as well as general investor communication.

Do you need to publish before admission? No standard pre-admission requirement.

At admission: Use RNS where required for:

• Transaction announcements
• Admission-related disclosures

Key takeaway: RNS is case-dependent, driven by transaction structure and disclosure needs.

Do you need to publish before admission? No mandatory pre-admission requirement.

• Driven mainly by prospectus/programme documentation

At admission: Use RNS for:

• Launch announcements
• Product-related updates

Key takeaway: RNS is event-driven, not a standard step for admission.

What this is: The Issuer Services platform is at the heart of the relationship between Issuer Investor Relations, Treasury teams, Investors and Advisors. The platform provides data, investor relations communications tools and insights to assist IR and treasury professionals with their day-to-day workflows. Read more about Issuer Services.

Do you need to use it? Recommended for all issuers + you get access as part of your annual fee!

When to engage: We aim to engage with you before and after admission as part of your ongoing market presence.