What is a Bond Prospectus?
A bond prospectus is the disclosure document that describes an issuer, its securities, and the risks attached to them, approved by the Financial Conduct Authority where the rules require approval. It is the document a UK issuer publishes so that investors can assess the bond on the same information as everyone else.
Whether an issuer needs one, and what it must contain, changed on 19 January 2026. That is the date the Public Offers and Admissions to Trading Regulations 2024 (POATRs) and the FCA’s Prospectus Rules: Admission to Trading on a Regulated Market sourcebook (PRM) replaced the prospectus regime UK law had inherited from the European Union. The change affects every UK corporate bond issuer, because it separates two questions that used to be tied together: whether the bond is offered to the public, and where it is admitted to trading.
This article sets out how the two questions now work. It explains the mechanics only. It does not recommend any bond or invite investment, and it is not legal advice.
The old rule and the new one
Under the previous regime, a prospectus was required for an offer to the public unless an exemption applied. The new regime reverses the approach. A prospectus is no longer the default requirement for a public offer. Instead, it is unlawful to offer securities to the public in the UK unless an exemption applies. Admission to a UK regulated market is treated separately, as a designated activity, and the FCA’s PRM sourcebook decides when a prospectus is needed for that.
In practice, an issuer asks two questions in this order. First: is this an offer to the public, and if so, which exemption covers it? Second: where will the bond be admitted to trading, and what disclosure does that venue require?
The exemptions that matter for bond issuers
Four exemptions do most of the work for debt.
An offer made only to qualified investors is exempt. A qualified investor is, broadly, a professional investor such as a regulated institution, and the definition is set by law.
An offer addressed to fewer than 150 persons in the UK, other than qualified investors, is exempt.
An offer where each unit has a denomination of at least £50,000, or the equivalent in another currency, is exempt. This replaces the former threshold of €100,000. An issuer used to quoting the old euro figure should update its documents and its legends.
A new exemption covers offers conditional on admission to trading, and it can be used for bonds in lower denominations.
If one of these applies, the offer itself does not need a prospectus. That does not decide the separate question of admission.
Where the bond is admitted decides the document
The second question is the venue. A bond admitted to a UK regulated market falls under the PRM sourcebook, and a prospectus approved by the FCA may be required. The regime now applies a single, lighter disclosure standard to all debt securities, based on the wholesale standard, regardless of denomination. Prospectus summaries are no longer required for debt.
A bond admitted to a multilateral trading facility restricted to qualified investors is outside the FCA’s prospectus requirement. The London Stock Exchange’s International Securities Market (ISM) is the main example. An issuer admitting a bond there prepares admission particulars under the ISM rules, approved by the exchange, and the UK Market Abuse Regulation still applies to the bond once it trades. An MTF that is open to retail investors is different: it must require an MTF admission prospectus as a condition of admission.
The London Stock Exchange’s Professional Securities Market closed to new admissions on 19 January 2026. Issuers whose plans assumed it need a new route, and existing securities there remain listed.
What the reform changed beyond the threshold
Several other changes affect how an issuer plans. The further-issuance threshold rose from 20 per cent to 75 per cent of existing fungible securities, which matters to any issuer who expects to add to a line later. Prospectuses approved by the FCA before 19 January 2026 stay valid for their 12-month period, under the old rules, until they are renewed. Medium-term note programme issuers can now incorporate later financial information by reference during a base prospectus’s 12-month validity, without a supplement. Where bonds are marketed as green, social, sustainable, or sustainability-linked, the prospectus must say so and state whether they are issued under a framework.
For a worked view of the document itself, see how to prepare a strong offering circular. Issuers who also plan to sell into the United States should read Rule 144A vs Regulation S, because the UK disclosure document and the US selling restrictions have to be drafted together.
A common error
The most common mistake in this area is treating the denomination exemption as the answer to the whole question. A £50,000 denomination can exempt the offer from the public-offer prohibition. It does not tell the issuer which venue to choose or what that venue will require. The note on the top five mistakes issuers make when listing bonds sets out how the venue decision is often made too late.
A composite example
A UK logistics company plans a £20 million bond in £100,000 denominations, sold only to institutions. Because each unit is at least £50,000, the offer is exempt from the public-offer prohibition. The company’s adviser then confirms the venue question separately. If the company admits the bond to the ISM, it prepares admission particulars under the exchange’s rules and does not need an FCA-approved prospectus for that admission. If it chooses a UK regulated market instead, the PRM sourcebook applies and an approved prospectus may be needed.
Nobody on the finance team had priced the second decision. Moving from the ISM to a regulated market would have added a prospectus approval to the critical path late in the timetable. (Composite example, details altered.)
Where to start
Set out both questions in writing before drafting begins: which exemption covers the offer, and which venue the bond is admitted to. The first is a legal analysis. The second is a commercial decision with legal consequences.
The Bond Service supports issuers with investment bond and prospectus drafting, including a review of whether a planned structure fits the exemption and venue it assumes.
This article is for information only and is not legal, financial, or investment advice. Issuers should take advice from qualified counsel on their own transaction.
