Pre-IPO TerminalUK Listing Rules & IPO Intelligence
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Listing-rules watch1 September 2026

What moved in the UK listing regime

UK Listing Rules, Disclosure Guidance and Transparency Rules, and FCA Primary Market Bulletins — what changed, when it bites, and what it does to the evidence your directors rely on. Every entry names the criteria it touches.

Archived edition — the rules may have moved since. Read the current one

The takeaway

Every item here turns on one act: deciding whether something is inside information, recording who decided and when, and going back to that decision instead of letting it stand unexamined.

  • Name the person who decides — not the firm you asked.
  • Put a clock on every delayed disclosure, and minute the review even when nothing has changed.
  • Flag inside information deliberately; a default that marks everything is itself a finding.

Covering FCA and FRC publications 29 August to 1 September 2026 · rule citations current as of 2026-08-28

The window was quiet. Nothing touching a Main Market equity listing was published between 29 August and today: the FCA publications feed has added nothing since Primary Market Bulletin 65 on 28 August, the news feed's only new item is a consumer notice about Child Trust Funds, and the FRC has published nothing since late July. So this edition goes back into PMB 65 itself. The last edition took one section out of it — the finding on expert reports. The bulletin has six, and three more of them land on the same part of your file.

1. A new mandatory form, and it lands on 21 September

PMB 65 announces an inside information declaration form. From Monday 21 September 2026, every first submission of an equity document through the FCA's Electronic Submission System portal — including guidance requests — has to include it. The form asks one thing: does this submission contain inside information, and if it does, what is it. The FCA says it will not allocate a case for review until the completed form arrives, and gives its reason plainly: the existing process was inefficient at identifying quickly when inside information was in a submission, and the regulator needs to know so it can apply the right internal handling controls on its own side.

What it means for your FPPP file: this is a dated obligation three weeks out, not a consultation. Someone in your process now has to make and record an inside-information determination at the moment of first submission — which is early, often the first substantive contact with the FCA on the transaction, and well before the point most groups think their disclosure machinery starts running. Two checks. First, do your disclosure committee's terms of reference actually cover submissions to the regulator during the transaction, or do they only describe post-admission announcements? Most pre-IPO drafts do the latter. Second, is the person who will sign this form the same person your MAR procedure names as deciding what is inside information? If those are two different people — a corporate finance adviser signs, a committee decides — you have a control gap that is now visible on the first document the FCA reads.

Touches fr-5, fr-6 — check yours · run the free scan

2. The FCA has been reading regulatory announcements, and it did not like the adjectives

The bulletin's section on language in regulatory announcements sets out what supervision has been seeing: vague, exaggerated and flamboyant wording that reads as marketing rather than regulated information; unnecessarily frequent updates on commercial agreements already announced; repeated commentary on macroeconomic conditions already in the public domain; broad sector commentary with no issuer-specific content; and claims of support from public figures resting on minor, immaterial remarks.

The more serious half is separate. The FCA says some announcements were marked as inside information when they almost certainly were not — often coinciding with a significant spike in the share price. It cites UKLR 1.3.3R (reasonable care that regulatory disclosures are accurate and full), UKLR 2.2.1R, Listing Principles 1 and 6, DTR 6.3.3R, UK MAR Articles 12(1)(c) and 17.1, and PERG 8.21.1G. Where an announcement strays significantly from regulated information, it says it will consider both whether the announcement is misleading and whether the issuer has poor systems and controls.

What it means for your FPPP file: the systems-and-controls half is the part that reaches you before admission, because that is what a sponsor has to form a view on. Note which article the FCA reached for on the mislabelling point — Article 12(1)(c) is the market manipulation article, so a false inside-information flag sitting next to a price move is not being treated as an excess of caution. Your procedure therefore needs a positive step where somebody decides an announcement is inside information and records the reasoning, rather than a default that flags everything and calls it prudent. And the drafting side needs a named reviewer whose job is to take the adjectives out before release. A disclosure committee with no house style will approve whatever the investor relations agency sent it.

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3. Delayed disclosure: the decision gets made once and then never revisited

The bulletin reports on the FCA's ongoing review of delayed disclosure of inside information notifications. UK MAR Article 17(4) lets an issuer delay disclosing inside information only while three conditions all hold — immediate disclosure would prejudice its legitimate interests, the delay is not likely to mislead the public, and confidentiality can be maintained. The FCA found practice inconsistent, and the findings have a shape: blanket classification of information as inside information across financial reporting periods without case-by-case assessment; no reassessment during extended delay periods; misunderstanding of what inside information is, including treating a closed period as an indicator in itself; automated processes triggering regulatory steps without a meaningful opportunity to reassess; and smaller issuers relying on third-party advisers without keeping enough internal understanding to apply the advice. It points to Primary Market Technical Note 506.3 (July 2025) for the case-by-case requirement, and to DTR 2.2.9G(2).

What it means for your FPPP file: three of those five findings describe the same defect — a procedure that runs once and then stops. So the fix is structural rather than a wording change. Give your MAR procedure a reassessment trigger with a clock on it: a delay reviewed at a stated interval and at each identified event, with the review minuted whether or not the answer changed, because an unrecorded review is indistinguishable from no review. If you are buying a RegTech tool to run insider lists and delay notifications, the FCA has now said in terms that automation without a human reassessment gate is a finding — so document where the human sits in the flow. And the last one is the one pre-IPO groups reliably get wrong: "we rely on our advisers" is named here as a weakness, not a mitigation. Retaining a law firm is not a procedure. Your file needs to show someone inside the group who understands the obligation well enough to know when to ask.

Touches fr-5, fr-6, mr-4 — check yours · run the free scan

Sources

A rule moved. Did it move under you?

Every entry above names the criteria it touches. The free scan walks 15 of the 73 across all nine FPPP areas, checks your answers against each other, and tells you where they contradict. It runs entirely in your browser — nothing is sent anywhere, and nothing is stored.

Run the free scan →Read all 73 criteria

Published Fridays — one edition a week, covering the week just gone. Compiled from the FCA’s own publications and news feeds, and cited to them. This is a summary written for people preparing to list — it is not legal advice, not investment advice, and not a substitute for reading the rule.