AIM Rules for Companies: Why Good Governance Is Now a Differentiator

The London Stock Exchange’s recent reforms to the AIM rules for companies, which took effect on 5 August 2026, mark a significant shift in the evolution of the UK’s leading growth market.

Designed to reduce regulatory friction, facilitate capital raising and support corporate growth, the changes move AIM further towards a principles-based framework that places greater reliance on advisers and boards rather than prescriptive regulation.

Among the changes are simplified admission requirements, including the removal of the formal working capital statement, targeted disclosure of capital resources, financial obligations and expected funding needs over the following 12 months, incorporation by reference and greater accounting flexibility for certain issuers, a fast-track route, now framed through the Express Market Route and dual-market applicant route, for certain international companies, greater flexibility around acquisitions, including changes to reverse takeover requirements and an increase in the substantial transaction threshold from 10% to 25%, and new mechanisms to support fundraising activities, including the capital access window under which an AIM company may request a temporary suspension while an equity fundraising or share-issue transaction is marketed or negotiated.

While these reforms are broadly positive for issuers, they also raise an important question: if regulation is becoming lighter, what will differentiate the companies that attract and retain investor confidence?
The answer is increasingly likely to be governance.

Importantly, a more streamlined AIM framework does not reduce the need for disciplined compliance with continuing obligations, market disclosure standards, directors’ duties, NOMAD oversight and robust controls around market-sensitive information.

Historically, companies could often demonstrate AIM compliance through the production of prescribed documents, extensive disclosures and adherence to detailed procedural requirements. As some of those obligations are streamlined, investors will place greater emphasis on the quality of leadership, transparency and decision-making within a company.

In this environment, governance becomes more than a compliance exercise. It becomes a means of building trust with shareholders, lenders and other stakeholders.

AIM has always relied upon judgement and proportional regulation. The latest reforms strengthen that approach by acknowledging that governance quality cannot simply be legislated. Instead, it strategic governance must be embedded within the culture and operations of a business.

This is particularly significant given that AIM companies are no longer required to specify a recognised corporate governance code and comply or explain against it. That change does not remove investor expectations around governance quality; rather, it places greater emphasis on the board’s ability to evidence proportionate, credible and well-embedded governance arrangements.

The Evolving Role of the Company Secretary Role in AIM Governance

Against this backdrop, the role of the Company Secretary is undergoing a fundamental shift.

Traditionally viewed as the custodian of board processes and regulatory compliance, today’s Company Secretary is increasingly a strategic adviser to the board. As regulatory requirements become less prescriptive, directors require trusted advisers who can help them navigate complex governance decisions while maintaining market confidence. This is where the company secretary role becomes increasingly important.

A high-performing Company Secretary now contributes far beyond meeting administration and statutory filings. Their role includes:

• Advising boards on governance best practice
• Supporting effective decision-making
•  Managing stakeholder communications
• Coordinating with NOMADs, brokers and legal advisers
• Anticipating governance risks before they become regulatory issues
• Maintaining effective disclosure controls, board records and a clear audit trail for key decisions
• Supporting conflicts management, related-party governance and appropriate handling of inside information
• Providing governance oversight for acquisitions, fundraising and other transactions that may affect investor confidence
• Helping boards balance flexibility with accountability.

In many AIM companies, the Company Secretary is uniquely positioned at the centre of AIM governance, strategy and investor engagement.

Maintaining Investor Confidence in a Principles-Based Regime

One potential consequence of reduced regulatory requirements is that investors may perceive a reduction in transparency. While the reforms aim to remove duplication and inefficiency, shareholders will still expect robust governance standards and timely disclosure of material information.

The Company Secretary plays a critical role in addressing these concerns by ensuring that boards continue to communicate clearly and openly with the market.

This may mean supporting proportionate, accurate and well-controlled encouraging voluntary disclosures where appropriate, enhancing board reporting, improving governance statements and ensuring that significant strategic decisions are supported by clear rationale and documentation.

Companies that embrace transparency are likely to be rewarded with stronger investor confidence, regardless of whether disclosures are mandated by regulation.

Supporting Strategic Growth

The new AIM framework is designed to help companies grow more efficiently, particularly through acquisitions and capital raising and updated AIM fundraising rules.

The reforms also permit certain special voting share structures at admission, subject to safeguards, which may make AIM more attractive to founder-led growth companies while increasing the need for clear governance controls around voting rights, related-party matters and investor communication.
However, growth transactions often carry significant governance and execution risk.

An experienced Company Secretary helps boards navigate these challenges by coordinating advisers, managing approvals, ensuring appropriate governance oversight and maintaining clear communication with shareholders throughout the transaction lifecycle.

Rather than acting solely as a compliance gatekeeper, the modern Company Secretary becomes an enabler of strategic growth.

Governance as a Competitive Advantage

As AIM becomes more flexible, strong governance may become one of the most important differentiators between companies competing for capital under the evolving AIM rules for companies..

Institutional investors are increasingly focused not only on financial performance but also on board effectiveness, transparency, risk management and long-term sustainability. Companies that can demonstrate these attributes are likely to command greater investor confidence and attract a broader shareholder base.

The Company Secretary sits at the heart of this agenda, helping boards convert governance from a regulatory requirement into a genuine competitive advantage.

A New Era for AIM Governance Conclusion

The AIM reforms represent an important step towards creating a more dynamic and competitive growth market. By easing administrative burdens and introducing greater flexibility, they should help companies raise capital more efficiently, pursue acquisitions and access public markets with greater ease.

At the same time, as the regulatory framework becomes lighter, expectations around governance are likely to rise. Investors will place less emphasis on the volume of disclosure and more on the quality of governance, leadership and stakeholder engagement.

In this environment, the role of the Company Secretary goes well beyond compliance. As a strategic governance adviser, they are well placed to help boards preserve trust, support growth ambitions and stand out in an increasingly competitive AIM landscape.

As AIM regulation becomes simpler, strong governance will become an even more important point of differentiation, with the Company Secretary playing a central role in championing it.

JTC’s Governance Team is ideally placed to help companies navigate this changing landscape with confidence, combining deep listed company expertise with practical, strategic support. To find out how JTC can support your business, please contact Susan Fadil, Head of Listed.