TRW & Co · Equity capital markets
UK Listing Rules Reform and the New Prospectus Regime
The UK listing rules reform replaced the premium and standard segments with a single ESCC category in July 2024, swapped most shareholder votes for disclosure, and was followed by a new prospectus regime in January 2026. This guide explains what changed, what still applies and how IPO candidates and listed boards should prepare as of October 2026.
Key pointThe higher prospectus threshold for further issuances only helps if the company also has Companies Act authority to allot shares and disapply pre-emption on the same scale, so the AGM resolutions now matter as much as the FCA rules.
At a glance
Single ESCC category
Since 29 July 2024, premium and standard listings for trading companies have been replaced by one equity shares (commercial companies) category under the FCA’s UKLR sourcebook.
No vote on large deals
Significant transactions at 25% on the class tests now need a detailed announcement rather than a circular and shareholder vote; reverse takeovers still need approval.
Founder voting rights
Founders, directors and employees can keep enhanced voting rights after IPO without a fixed sunset; pre-IPO institutional investors are limited to ten years.
Prospectus regime 2026
From 19 January 2026, POATR and the FCA’s PRM sourcebook replaced the UK Prospectus Regulation, with a 75% further issuance threshold for listed companies.
Lighter IPO eligibility
The three-year revenue track record test has gone, but ESCC issuers still need a sponsor, a 10% free float and a minimum market capitalisation.
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The short answer: what the UK listing rules reform changed
The UK listing rules reform is the biggest overhaul of the London listing regime in a generation. On 29 July 2024 the FCA replaced the old Listing Rules with the UK Listing Rules (UKLR) sourcebook, merging the premium and standard segments for trading companies into a single "equity shares (commercial companies)" category, usually shortened to ESCC. On 19 January 2026 a new prospectus regime followed, built on the Public Offers and Admissions to Trading Regulations 2024 and new FCA rules.
Taken together, the changes move the UK from a model of shareholder approval towards one of disclosure. Most large transactions no longer need a shareholder vote, founders can keep enhanced voting rights after an IPO, and listed companies can raise far more new capital without publishing a prospectus.
As of October 2026, both halves of the package are in force. This guide explains what changed, what stayed the same and what IPO candidates and listed boards should do now.
The legal framework after the reforms
The regime now rests on three layers. The Financial Services and Markets Act 2000 gives the FCA its powers as the UK listing authority. The Public Offers and Admissions to Trading Regulations 2024 (often called POATR) replaced the onshored UK Prospectus Regulation and set a new statutory framework for public offers. The FCA's rulebooks then fill in the detail: UKLR for listing, and the Prospectus Rules: Admission to Trading on a Regulated Market (PRM) sourcebook for prospectuses.
The FCA explained the listing changes in Policy Statement PS24/6 and the prospectus changes in Policy Statement PS25/9, published in July 2025. Its primary markets pages collect later bulletins and technical notes, which matter because the FCA has continued to make smaller amendments through 2025 and 2026.
Other rules sit alongside. The Market Abuse Regulation, the Disclosure Guidance and Transparency Rules and, for most premium-style issuers, the UK Corporate Governance Code still apply. A listed company with its registered office in the UK is also normally subject to the UK Takeover Code.
The single ESCC category explained
Before July 2024, a trading company chose between a premium listing, with the full super-equivalent rulebook, and a standard listing, with lighter EU-minimum requirements but no FTSE index inclusion. The ESCC category replaces both for new commercial company listings. Existing premium-listed companies moved into it automatically.
Former standard-listed commercial companies were mapped into a closed "transition" category instead. They can stay there or apply to move into ESCC if they meet the eligibility conditions. Separate categories remain for closed-ended investment funds, shell companies including SPACs, overseas companies seeking an international secondary listing, and non-equity securities such as debt.
Eligibility at IPO
The reforms removed the former requirement for a three-year revenue-earning track record and the eligibility test of a clean twelve-month working capital statement, though a working capital statement still has to appear in the prospectus. That opens the door to earlier-stage and pre-revenue businesses, including science and technology companies that previously looked to New York.
Some protections remain. ESCC companies must have at least 10% of their shares in public hands and meet a minimum expected market capitalisation of £30 million. A sponsor must still be appointed for the IPO. A company with a controlling shareholder no longer needs a formal relationship agreement, but it must show it can operate independently of that shareholder at all times.
Enhanced voting rights for founders
Dual-class structures are now much easier. Founders, directors and employees who hold shares at IPO may keep enhanced voting rights with no fixed sunset or maximum ratio. Pre-IPO institutional or corporate investors can hold enhanced rights too, but only for a capped period of ten years. For founder-led technology businesses this was one of the most significant parts of the UK listing rules reform.
Continuing obligations: votes replaced by disclosure
For listed boards, the most practical change concerns transactions. Under the old premium regime, a Class 1 deal needed a circular and a shareholder vote. Under UKLR, an ESCC company's significant transaction, measured at 25% on the class tests, now needs only a detailed market announcement. The profits test has gone, which removes a frequent source of anomalous results.
Related party transactions follow the same pattern. Where a transaction outside the ordinary course reaches 5% on the class tests, the company must announce it and obtain a sponsor's confirmation that the terms are fair and reasonable, but no circular or vote is needed. Reverse takeovers still require shareholder approval and an FCA-approved circular, as does a voluntary cancellation of listing.
| Issue | Old premium regime | ESCC under UKLR |
|---|---|---|
| Significant transactions (25% class tests) | Circular and shareholder vote (Class 1) | Detailed announcement; no vote |
| Related party transactions | Circular, vote, related party excluded | Announcement and sponsor fair and reasonable confirmation at 5% |
| Reverse takeovers | Vote and circular | Vote and circular retained |
| Track record at IPO | Three-year revenue-earning record | Removed |
| Enhanced voting rights | Narrow, time-limited | Permitted for founders, directors and employees without a fixed sunset |
| Controlling shareholder | Relationship agreement required | No agreement; independence still required |
Disclosure is not a soft option. Institutional investors still expect engagement on large deals, and a board that pushes through a transformative acquisition without consultation may face pressure at the next annual general meeting. Directors' duties under the Companies Act 2006 are unchanged; our guide to directors’ duties in the UK explains them.
The new prospectus regime from January 2026
The second half of the UK listing rules reform concerns prospectuses. POATR sets a general prohibition on offering securities to the public unless an exception applies, and separately requires a prospectus when securities are admitted to a regulated market such as the London Stock Exchange Main Market, subject to exemptions in the PRM sourcebook.
Secondary fundraising
The headline change is the further issuance threshold. A listed company can now admit new shares of a class already admitted without a prospectus up to 75% of its existing share capital of that class over a rolling twelve-month period, up from 20%. For closed-ended investment funds the threshold is 100%. Companies can still choose to publish a voluntary prospectus, for example to support a retail offer.
Public offers outside the main market
The old euro-denominated small offer threshold has been replaced by a £5 million exception. Larger offers of unlisted securities to a broad investor base must normally go through a regulated public offer platform, a new FCA-authorised activity that began on the same day. Offers to qualified investors remain outside the prohibition. For growth companies raising money privately, the financial promotions regime still applies to any marketing.
Liability, timing and content
Three further changes matter for IPO candidates. First, a new category of protected forward-looking statements attracts liability only where the issuer knew the statement was untrue or was reckless, rather than on a negligence standard. Second, for an IPO with a retail offer, the prospectus must now be available for three working days before the offer closes, down from six. Third, equity issuers must disclose material climate-related risks and opportunities and summarise any published transition plan.
On primary multilateral trading facilities such as AIM, an "MTF admission prospectus" is required for initial admissions and reverse takeovers, with content set by the operator but statutory prospectus liability applying.
How an IPO works under the reformed regime
The mechanics of an ESCC listing remain familiar, but timetables can be shorter and the eligibility conversation with the FCA is simpler. A typical sequence looks like this:
- Readiness review. Assess governance, financial reporting, tax structure and any dual-class proposal. Decide between the Main Market, AIM or a private route such as PISCES.
- Appoint advisers. Engage a sponsor, banks, reporting accountants and legal counsel. The sponsor must confirm eligibility to the FCA.
- Pre-IPO reorganisation. Insert a new holding company if needed, re-register as a plc, adopt listed-company articles and settle the share capital.
- Due diligence and verification. Advisers diligence the business and verify every statement in the prospectus. Our legal due diligence checklist sets out the usual workstreams.
- Prospectus drafting and FCA review. Prepare the prospectus under PRM, including the working capital statement, risk factors, climate disclosures and any protected forward-looking statements.
- Analyst research and intention to float. Publish the intention to float and connected research in line with the FCA conduct rules on IPO research.
- Bookbuilding and pricing. Approve and publish the prospectus, run the bookbuild, then price and allocate.
- Admission and continuing obligations. Admit the shares, then move to the UKLR, DTR and MAR compliance calendar.
Illustrative scenario: a founder-led technology IPO
This scenario is illustrative only; the parties are generic. A UK software group, still loss-making, wants to list in London. Its two founders hold 35% of the equity and want to keep control of strategy. Under the old premium rules, the revenue track record test and time limits on weighted voting would have pushed it towards a standard listing or a US exchange.
Under the reformed regime, the group can apply for ESCC listing, issue founder shares carrying enhanced votes on specified matters, and avoid a relationship agreement, provided it can show independence. After listing it plans a series of acquisitions. Each one above the 25% class tests needs a detailed announcement rather than a vote, so deal timetables shorten. A later £150 million fundraising can proceed without a prospectus because it falls within the 75% further issuance threshold, although the company must still comply with Companies Act pre-emption rights unless shareholders have disapplied them.
The practical lesson is that the UK listing rules reform shifts risk from regulatory process to investor relations. The founders still need institutional support for their governance model, and the board still needs a disciplined disclosure process.
Pre-emption rights under the Companies Act 2006 were not changed by the UK listing rules reform. The higher prospectus threshold is only useful if the company also has shareholder authority to allot and disapply pre-emption on the scale it needs. Check the annual general meeting resolutions early.
Risks and common mistakes
Assuming no vote means no investor scrutiny
Removing the mandatory vote on significant transactions does not stop institutional investors voting against directors at the next general meeting, or selling. Boards that treat the UK listing rules reform as licence to bypass engagement risk a governance backlash. Proxy advisers continue to publish voting guidelines on dual-class shares, related party deals and large acquisitions. The sensible approach is to consult major holders before announcing a transformative transaction, document the board's reasoning, and make sure the announcement contains everything a reasonable investor needs to assess the deal.
Misjudging the class tests
The class tests now apply at 25% for significant transactions and 5% for related party transactions, with the profits test removed. Errors still arise when companies aggregate linked transactions incorrectly, use the wrong financial figures, or overlook that a counterparty is a related party, for example a substantial shareholder. A mistake can mean a late or deficient announcement, and for related party transactions a missing sponsor confirmation. Build class test calculations into the deal timetable and have them reviewed by the sponsor where one is required.
Relying on the 75% threshold without checking the detail
The further issuance exemption applies to securities fungible with those already admitted and is calculated over a rolling period. It does not override Companies Act requirements on authority to allot, pre-emption or class rights, and it does not remove the need for an announcement and compliance with MAR on inside information. If a retail element is planned, a voluntary prospectus or another route may still be needed. Map the legal requirements before the board approves a fundraising timetable.
Treating forward-looking statements as safe harbours
The new protected forward-looking statements category reduces liability exposure, but only for statements that meet the FCA's definition and carry the required accompanying wording. Mandatory content such as the working capital statement is generally excluded. Projections that are not clearly marked or that fall outside the definition remain subject to the ordinary negligence-based standard. Verification work is still needed, and directors should be comfortable that every projection has a reasonable basis.
Cross-border angle: overseas issuers and Bangladesh
Overseas companies can list in London in the ESCC category if they meet its conditions, or use the international secondary listing category if they already have a primary listing elsewhere. Depositary receipts have their own rules. For an overseas issuer, the main questions are which corporate law governs shareholder rights, whether the Takeover Code applies, and how local securities and exchange control rules interact with a London offering.
Bangladeshi groups considering London capital face additional steps. Issuing securities abroad, and Bangladeshi residents investing in foreign securities, can require approvals from the Bangladesh Securities and Exchange Commission and Bangladesh Bank. A UK holding company structure may simplify a London listing but raises separate tax and exchange control questions. Our UK–Bangladesh trade and finance team works through these issues alongside Bangladeshi counsel in Dhaka.
What to do next: a checklist
For boards and IPO candidates, the UK listing rules reform creates opportunities, but only if the company is prepared. Before committing to a London listing or a large fundraising, work through the following:
- Confirm which UKLR category fits, and whether the company meets the free float and market capitalisation conditions.
- Decide whether founders or early investors need enhanced voting rights, and test the proposal with likely cornerstone investors.
- Review the articles, AGM authorities and pre-emption disapplications against the planned capital-raising strategy.
- Build a disclosure-led transaction process: class test calculations, announcement templates and inside information controls.
- Plan prospectus content early, including climate-related disclosures and any protected forward-looking statements.
- Compare the Main Market with AIM and PISCES, which may suit companies wanting periodic liquidity without a full listing.
Our equity capital markets solicitors in London advise issuers and investors on listings, secondary fundraisings and continuing obligations, and our corporate governance team supports boards on investor engagement. To discuss a listing or the UK listing rules reform in more detail, contact TRW & Co at info@trw.co.
Frequently asked questions
01What is the ESCC category?
ESCC stands for equity shares (commercial companies). It is the single listing category for trading companies introduced by the FCA’s UK Listing Rules on 29 July 2024, replacing the former premium and standard segments. Former premium-listed companies moved into it automatically, while former standard-listed trading companies were placed in a closed transition category from which they can apply to move. ESCC companies must have a sponsor at IPO, maintain at least a 10% free float and comply with continuing obligations, including reporting against the UK Corporate Governance Code on a comply or explain basis.
02Do shareholders still vote on major acquisitions?
Generally not. Under the UK Listing Rules, an ESCC company making a significant transaction at 25% on the class tests must publish a detailed announcement but does not need a circular or shareholder vote. Related party transactions at 5% need an announcement and a sponsor’s fair and reasonable confirmation, again without a vote. Shareholder approval is still required for reverse takeovers and for cancelling a listing. Shareholders may also need to vote on Companies Act matters, such as authority to allot shares, which the listing reforms did not change.
03When did the new UK prospectus regime start?
The new regime took effect on 19 January 2026. The Public Offers and Admissions to Trading Regulations 2024 replaced the onshored UK Prospectus Regulation, and the FCA’s detailed rules, published in Policy Statement PS25/9, sit in the PRM sourcebook for regulated market admissions. Rules for public offer platforms started on the same date. The FCA has since made a number of smaller clarifying amendments, so issuers should check the current Handbook text and primary market bulletins before relying on any provision.
04How much can a listed company raise without a prospectus?
A company can now admit further shares fungible with those already admitted to a regulated market without a prospectus up to 75% of its existing shares of that class, calculated over a rolling twelve-month period, compared with 20% under the old regime. Closed-ended investment funds can issue up to 100%. The company still needs Companies Act authority to allot and to disapply pre-emption rights, must comply with the Market Abuse Regulation, and may choose to publish a voluntary prospectus where a retail offer is planned.
05Can founders keep control after a London IPO?
Yes, more easily than before. Under the UK Listing Rules, founders, directors and employees holding shares at IPO may keep enhanced voting rights with no fixed sunset or maximum weighting, which allows dual-class structures similar to those common in the US. Pre-IPO institutional and corporate investors can hold enhanced rights for up to ten years. Investors and index providers may still scrutinise such structures, so founders should test the proposal with likely cornerstone investors before finalising the articles.
06Is AIM affected by the reforms?
AIM is not governed by the UK Listing Rules, but it is affected by the new prospectus regime. From January 2026, an MTF admission prospectus is required for initial admissions and reverse takeovers on primary multilateral trading facilities such as AIM, with content set by the market operator and statutory prospectus liability applying. The London Stock Exchange has also consulted on changes to the AIM Rules. Companies choosing between AIM and the Main Market should compare eligibility, continuing obligations, index inclusion and investor base.
Sources and official materials
- FCA Handbook: UK Listing Rules (UKLR) — Current listing categories, eligibility and continuing obligations
- FCA Policy Statement PS24/6 — Final rules for the UK listing regime reforms (July 2024)
- Public Offers and Admissions to Trading Regulations 2024 — Statutory framework for public offers and admission prospectuses
- FCA Policy Statement PS25/9 — Final rules for the new prospectus regime from January 2026
- FCA Handbook: PRM sourcebook — Prospectus rules for admission to a regulated market
- FCA: Primary markets — Primary market bulletins, technical notes and updates
- FCA PS25/6: PISCES sandbox arrangements — Rules for the Private Intermittent Securities and Capital Exchange System
General information only, current as at 21 October 2026. It is not legal advice and does not create a solicitor–client relationship. It reflects the law of England and Wales unless stated otherwise; Scotland and Northern Ireland have separate legal systems, and the law changes frequently. Check current official sources and take advice on the facts of your matter.