IPO

IPO

This overview is a guide to the Corporate content within the IPO—AIM subtopic, with links to the appropriate materials. It summarises the route by which a public company can have its securities admitted to trading on AIM, a market owned and operated by the London Stock Exchange plc (LSE).

IPOs

Our fundamentals note IPOs—fundamentals contains the answers to some key questions relating to IPOs on the London stock markets.

Regulatory status of AIM

AIM is a market operated and regulated by the LSE in its capacity as a recognised investment exchange under the Financial Services and Markets Act 2000 (FSMA 2000). It is intended primarily for equity securities of smaller and growing companies that may not yet qualify for the Main Market. It is regulated separately from the Main Market for listed securities. AIM is not a UK regulated market but instead falls within the definition of a UK multilateral trading facility (as defined in the FCA Handbook glossary and in the UK Markets in Financial Instruments Regulation (EU) No 600/2014). As AIM is not a UK regulated market, securities admitted to AIM do not need to

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Latest Corporate News

FCA publishes Policy Statement PS24/19: Enhancing the National Storage Mechanism

The Financial Conduct Authority (FCA) has published Policy Statement PS24/19: Enhancing the National Storage Mechanism in which it summarises the feedback received to Consultation Paper CP24/17, its longer-term plans for the National Storage Mechanism (NSM) and its final rules and guidance, which will enable the FCA to make it easier for NSM users to find regulated information. The new rules will appear in the FCA Handbook on 3 November 2025, which is when they will come into force. The technical note guidance will take effect at the same time.

High Court confirms broad government discretion in UK national security reviews

Competition analysis: In this judgment, the High Court issued its first ever ruling on a challenge to an unwinding order imposed by the UK government under the National Security and Investment Act 2021 (NSIA 2021). In a clear victory for the government, the court confirmed the broad discretion of the Secretary of State to determine the appropriate remedy for resolving national security concerns arising from a problematic transaction, up to and including forced divestment of the acquirer’s shareholding in a qualifying entity, as well confirming that the overall process followed by the Government in such cases is fair and proportionate. The judgment is also notable for the insights that it provides into the process followed by Government officials and ministers for in-depth reviews under the NSIA 2021, with the level of detail going well beyond what has been disclosed in the Government’s own guidance to date. Written by Becket McGrath, partner at Euclid Law Ltd.

Corporate weekly highlights—19 December 2024

This week's edition of Corporate weekly highlights includes: an FCA consultation on the regulatory framework for the Private Intermittent Securities and Capital Exchange System (PISCES), FCA Primary Market Bulletin 53 containing a consultation on changes to technical and procedural notes in the FCA Knowledge Base following changes to the UK listing regime, The Companies (Accounts and Reports) (Amendment and Transitional Provision) Regulations 2024 which will increase financial thresholds for the purposes of certain Companies Act reporting requirements, news of the UK Sustainability Disclosure Technical Advisory Committee’s recommendation to endorse IFRS Sustainability Disclosure Standards, PERG publishing its 17th report on conformity with the Walker Guidelines, together with an amended version of the guidelines and ISS Governance publishing updates to its UK and Ireland proxy voting guidelines 2025.

Cabinet Office publishes assessment report on National Security and Investment Act

The Cabinet Office has released a report detailing the assessment and conclusions of the evaluation of the National Security and Investment Act (Notifiable Acquisition) (Specification of Qualifying Entities) Regulations 2021. This review provides insights into the government's analysis of the current regulatory framework and its implications for national security considerations in the context of credible entity acquisitions.