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Secondary Share Offerings UK: Rules & Process

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Part ofCorporate Law

Updated June 2026 · England & Wales
Raising fresh equity after your company's initial funding round is a common milestone, but the rules around it are not always obvious. A secondary share offering lets a company issue additional shares to bring in capital without taking on more debt, and it can also refresh the shareholder register, improve the tradability of existing shares, or fund a particular project. That said, the process is tightly governed by company law, the Financial Services and Markets Act 2000, and the company's own articles of association. This guide walks through what a secondary offering actually is, the main structures used in the UK, the legal steps you should expect, and the common pitfalls that trip up directors and founders. It is written for business owners and in-house teams who want a plain-English overview before taking specialist input.

Overview

A secondary share offering is simply the issue of new shares by a company that has already raised equity at least once before. It sits apart from an initial public offering, and it can happen whether the company is private, AIM-listed, or on the Main Market.

The capital raised belongs to the company itself (this is the key distinction from a sale of existing shares by individual shareholders, which is sometimes also loosely called a secondary offering). In practice, UK companies use these issues for all sorts of reasons: funding expansion, shoring up working capital, financing an acquisition, repaying borrowings, or bringing strategic investors onto the register.

The mechanics depend on whether existing shareholders are offered the new shares first, how the price is set, and what disclosures must be made. For public companies, the rules are more demanding because of the prospectus regime and market abuse considerations. For private companies, the articles of association and any shareholders' agreement tend to drive the process.

Key steps

  1. Check your constitution and agreements. Before anything else, read the articles of association and any shareholders' agreement. These often contain pre-emption clauses, director authority limits, and conditions on share issues that sit on top of the statutory rules. Ignoring them is a common cause of disputes later.
  2. Decide the structure. Work out whether the offering will be open to existing shareholders in proportion to their holdings (a rights issue or open offer), or placed with selected investors outside of pre-emption (a placing). Each route has different cost, speed, and dilution implications, so the choice should match the company's strategic aims.
  3. Obtain the necessary authorities. Directors generally need authority to allot shares under section 551 of the Companies Act 2006, and a separate disapplication of pre-emption rights under section 570 or 571 if the issue will not follow the statutory pre-emption order. These usually require shareholder resolutions.
  4. Prepare disclosure documents. Depending on the size and type of offer, you may need a prospectus approved by the FCA, or you may fall within an exemption. Even where no prospectus is required, investors will expect a clear offering document setting out the terms, use of proceeds, and risks.
  5. Complete allotment and filings. Once subscriptions are received and the funds cleared, the board formally allots the shares, updates the register of members, issues share certificates or uncertificated holdings, and files form SH01 at Companies House within one month of the allotment.

Common questions

If you're dealing with this kind of situation, a call with an experienced legal adviser can help you work out the right next step — from £89.

Common questions

Q What is the difference between a rights issue and a placing?
A rights issue offers new shares to existing shareholders pro rata to their current holdings, protecting them against dilution. A placing allocates new shares to selected investors, often institutions, without first offering them to the wider shareholder base. Placings are quicker and cheaper but usually require shareholders to disapply statutory pre-emption rights before the issue can proceed.
Q Do we always need a prospectus?
No. A prospectus is required for certain public offers and admissions to regulated markets, but several exemptions exist, for example offers only to qualified investors or below specific size thresholds. The rules changed following reforms to the UK prospectus regime, so it is worth checking the current FCA position before assuming an exemption applies to your proposed offering.
Q What are pre-emption rights?
Pre-emption rights give existing shareholders the first opportunity to subscribe for new shares in proportion to their current holdings. They are set out in section 561 of the Companies Act 2006 and often mirrored in the articles. The aim is to protect shareholders from having their stake diluted without consent. These rights can be disapplied by special resolution.
Q How long does a secondary share offering take?
Timing varies widely. A simple private company placing with willing investors and existing authorities in place can complete in a few weeks. A rights issue by a listed company, with prospectus approval and a full shareholder circular, can take several months. Getting the structure and documentation right early tends to be the biggest driver of a clean timetable.
Q What filings are needed after the shares are issued?
The company must update its register of members, issue share certificates or update the uncertificated record, and file form SH01 with Companies House within one month. If the issue changes the share capital structure, further filings or amendments to the articles may be needed. Minutes of the board meeting authorising the allotment should also be kept on the statutory records.
Q Can directors issue shares without shareholder approval?
Sometimes. Directors of a company with only one class of shares have default authority to allot under section 550 of the Companies Act 2006, unless the articles say otherwise. In other cases, shareholders must grant authority by resolution. Even where authority exists, disapplying pre-emption rights almost always needs a special resolution passed by at least 75 percent of votes.
Q Does a secondary offering dilute existing shareholders?
It can. If an existing shareholder does not take up their entitlement in a pre-emptive offer, their percentage holding will fall. In a non-pre-emptive placing, all existing shareholders are diluted unless they also participate. The commercial impact depends on the issue price and the number of new shares, which is why pricing and structure are so closely scrutinised.
If you're dealing with this kind of situation, a call with an experienced legal adviser can help you work out the right next step — from £89.

Sources

This guide is based on primary UK law and official guidance.

Brad Askew, Solicitor (non-practising)

Written & reviewed by

Brad Askew Solicitor (non-practising)

Brad is on the roll of solicitors of England & Wales but does not hold a practising certificate and does not provide legal advice. LegalDocuments.co.uk is not a law firm and does not provide regulated legal advice.

Legal disclaimer
This article is for general information only. It is a tool to help you find your way — not legal advice, and not a substitute for speaking to a qualified adviser about your situation.