Understanding Unlisted Public Companies: Legal Considerations for UK Businesses

If you’re running a growing business in the UK, at some point you might wonder if “going public” is right for you - but what if you want the credibility and capital-raising advantages of a public company, without actually listing on the London Stock Exchange?

That’s where the concept of an unlisted public company comes in. These companies can raise capital from the public and operate at scale, but they’re not subject to all the regulations and requirements of listed PLCs. But as you’d expect, there’s a unique set of legal boxes to tick before you go down this route.

If you want to find out exactly what an unlisted public company is, how it works, and what legal fundamentals you need to cover, keep reading - we’ll break it all down in plain English, so you can make the right decision for your business’s future.

What Is an Unlisted Public Company?

First up, let’s clear up what we mean by an "unlisted public company".

An unlisted public company (officially, a Public Limited Company or PLC that’s not listed on a stock exchange) is a type of company that can offer shares to the public, but isn’t trading those shares on any official securities market like the London Stock Exchange.

In other words, it’s a public company by structure and law, but not by virtue of being listed. These businesses might raise money from a wide pool of investors - think venture capital, private placements, or high-net-worth individuals - but their shares are not available for everyday public trading.

Some key points about unlisted public companies in the UK:

• They must have “plc” or “PLC” on the end of their name.
• There’s a higher minimum share capital (£50,000), compared to private companies.
• They can offer shares to the public, but their shares aren’t on an official exchange.
• They’re subject to a slightly different set of legal and reporting requirements than private limited companies.

Wondering whether this structure is right for your business? Let’s look at when it’s commonly used and what the process involves.

Why Choose an Unlisted Public Company Structure?

There are a few scenarios where forming an unlisted public company makes sense:

• Your business wants to raise significant funds from a broad base of investors, beyond what a private company is legally allowed.
• You don’t want the pressure, scrutiny, or cost that comes with being listed on a stock exchange right away.
• You want the flexibility to convert to a listed company in the future (the conversion process is simpler from PLC to listed PLC).
• You’re running an enterprise where public trust, scale, and credibility are important, but you’d like to avoid some of the volatility or obligations of public trading at this stage.

It’s worth noting: Some well-known companies start as unlisted PLCs before seeking a listing - especially if their growth plans include attracting outside investors or potentially listing down the track.

But with great power (access to public capital) comes great responsibility. The legal requirements are higher, and getting the structure wrong can cause expensive headaches. That means getting your legal foundations right from day one is crucial.

How Do You Set Up an Unlisted Public Company in the UK?

Setting up a PLC (whether listed or not) involves more steps and stricter rules than setting up a private limited company. Here’s a straightforward roadmap:

1. Decide If a PLC Structure Fits Your Business Goals

Before jumping in, weigh up:

• The minimum share capital of £50,000 (of which at least 25% must be paid up before trading starts)
• Higher regulatory, reporting, and audit requirements
• Your need/desire to offer shares to the public (compared with remaining a private limited company)
• Long-term plans – do you see your company listing in the future?

Not sure which structure is the best fit? Check out our guide to choosing the ideal legal form for your UK company for a balanced breakdown.

2. Register the Company with Companies House

You’ll need to submit the following to Companies House:

• Company name (including “plc”)
• Articles of association (your company’s rulebook - these must comply with the Companies Act 2006 and include relevant PLC provisions)
• Memorandum of association
• Details of directors (at least two, and at least one qualified company secretary)
• Registered office address
• Statement of capital and shareholder details (showing you meet the £50,000 minimum statutory capital)

Professional legal help is wise at this stage - you’ll want tailored Articles of Association and support preparing all required documentation for Companies House. Avoid templates if your structure or investor plans are even slightly out of the ordinary!

(Learn more about how to register a company in our detailed guide.)

3. Set Up Share Allotment and Paid-Up Capital

Remember: Before you can trade as an unlisted PLC in the UK, at least £12,500 of your share capital (25% of £50,000) must be paid up, plus full payment for any shares issued as non-cash assets. Issuing shares and bringing in investors should be done in line with your articles and with formal shareholder agreements.

This stage is also where most founders will want robust shareholder contracts to set out everyone’s rights and duties.

What Legal and Compliance Obligations Do Unlisted Public Companies Have?

Unlisted public companies are regulated as public companies under the Companies Act 2006 – but without the additional rules for stock exchange listing. Here are the essentials you’ll need to get right:

1. Filing and Reporting Duties

• Preparation of annual accounts and directors’ reports (which are public record)
• Appointment of an auditor (audit is compulsory for PLCs, regardless of size)
• Filing annual confirmation statements and accounts with Companies House
• Keep a public register of shareholders, directors, and persons with significant control (PSC register)

Missing these requirements can result in late filing penalties and even criminal charges for directors, so make sure these processes are watertight.

2. Director and Secretary Rules

• Minimum of two directors
• At least one formally qualified company secretary (private companies can skip this – PLCs cannot!)
• Directors must meet all legal standards, including fiduciary duties, managing conflicts of interest, and upholding good corporate governance

3. Share Capital and Allotment Rules

• You must ensure any share offers to the public comply with UK financial promotion and securities law. Private placements and offers under certain thresholds may be exempt, but specialist advice is essential.
• Transferring shares must follow the company’s articles and all disclosure rules regarding significant shareholders.

If you plan to issue new shares, redeem, or buy back shares, you’ll want expert support. See our guide to share buybacks and legal compliance for PLCs.

4. General Meetings and Annual General Meeting (AGM) Rules

• PLCs must hold an AGM every year, where shareholders can vote on major matters and receive reports.
• Specific notice periods and procedural requirements apply - you’ll want to ensure statutory obligations are met (see our article: Annual General Meeting rules).

5. Additional Public Company Duties

• Closer scrutiny from the public and regulators.
• Potentially higher risk of legal action by disgruntled shareholders or members of the public.
• Greater obligations around transparency and disclosure.

All of this means your company must run to a higher compliance standard - so setting up good policies and contracts is vital.

What Legal Documents Does an Unlisted Public Company Need?

There’s no room for half-measures when it comes to PLC paperwork. You’ll need the following nailed down from day one:

• Articles of Association (bespoke and PLC-compliant - don’t just copy the “model articles” for private companies as they will not be sufficient)
• Shareholder Agreements (particularly important if you have more than a handful of investors)
• Director Service Agreements, setting out duties, protections, and compliance with public company laws
• Company secretarial compliance documents (for AGM minutes, board resolutions, statutory filings, etc.)
• Auditor Engagement Letter (required for annual audit process)
• Financial and trading agreements (contracts with customers, suppliers, lenders, and partners)
• Robust data protection policies - if you process personal data, you must comply with the Data Protection Act 2018 and UK GDPR

We strongly recommend getting all statutory and bespoke documents professionally drafted. Avoid using generic templates or DIY contracts for anything listed above.

If you’re not sure which contracts your specific PLC will need, check out our guide to legal documents for businesses or reach out for advice tailored to your industry and investor profile.

What Laws Must an Unlisted Public Company Follow?

Alongside all the company law rules we’ve covered, unlisted PLCs have to comply with:

• Corporate governance provisions under the Companies Act 2006
• FCA rules around financial promotions and securities if you are offering shares to the public in any way (including to friends/family/angels outside the stock market)
• Employment law (when hiring staff, you must provide correct contracts, pay, and workplace policies)
• Consumer law if you sell goods or services to the public (including refunds, advertising, and online sales regulations)
• Data protection and privacy legislation, including maintaining compliant Privacy Policies
• Health and safety legislation (applies if you have staff or a physical premises)

Staying on top of compliance is non-negotiable. Non-compliance can mean fines, loss of trading status, and damage to your reputation. Setting up your internal policies and operations correctly from the outset will make ongoing compliance much easier.

Can an Unlisted Public Company Become a Listed PLC?

Yes - and for many ambitious businesses, this is the end goal. Starting life as an unlisted PLC makes the eventual transition to a listed company (on the LSE, AIM, or another exchange) much smoother because the major structural and legal building blocks are already in place.

But beware: Going from private company straight to listed company is much more complex, with additional regulatory hurdles and costs. Starting as an unlisted PLC keeps your options open, and early compliance can boost investor confidence.

Key Takeaways for Unlisted Public Companies in the UK

• Unlisted public companies provide access to public share offers without the pressures and obligations of a stock market listing - but bring higher legal and compliance duties than private limited companies.
• You’ll need at least £50,000 in share capital, minimum two directors, and a qualified company secretary to register a PLC.
• Legal paperwork needs to be bespoke and robust - especially your Articles of Association, shareholder agreements, and compliance documents.
• You must file annual accounts, appoint auditors, and hold AGMs in line with Companies Act requirements.
• Issuing shares must comply with financial promotion and securities law, even when unlisted – and failing to comply can bring serious penalties.
• Complying with wider UK business law - employment, consumer, privacy, and health/safety laws - remains core to operating safely and successfully.
• Getting advice from a legal expert who understands PLC formation and compliance will save you major headaches and risk down the line.

Need Help Setting Up or Running an Unlisted Public Company?

If you’re still unsure whether an unlisted public company is right for you, or need help with registration, compliance, or drafting key legal documents, Sprintlaw’s team of expert lawyers can guide you through the process from day one. We make legals simple and stress-free so you can focus on growth and success.

To chat about your options, call us on 08081347754 or email team@sprintlaw.co.uk for a free, no-obligations consultation. We’re here to help you set up your business with confidence.