Setting Up a Public Limited Company: Step-by-Step Guide for 2026

A Public Limited Company (PLC) is one of the most recognised business structures in the UK.

But setting up a public limited company is not that simple. This is because there are many additional legal requirements, capital threshold and reporting obligations. Also, there are governance rules to consider.

In this guide, we explain everything you need to know about setting up a public limited company UK businesses can legally operate in 2026/27.

Here, you will get to know:

• What is a public limited company,
• Steps for setting up a public limited company,
• Ongoing compliance for a public limited company,
• And much more…

Let’s get into it!

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What Is a Public Limited Company?

Before deciding whether setting up a public limited company is right for your business, it helps to understand what is a public limited company and how it differs from an Ltd company.

A Public Limited Company (PLC) is a type of corporate business structure that is permitted by law to sell its shares to the general public (though many remain unlisted in the share market). Anyone can buy them. This is the exact opposite of a private limited company (Ltd). Under a private limited company, shares are sold privately and usually require permission from other directors.

Having a PLC does not mean your company is automatically listed on the London Stock Exchange. That is a completely separate process. It is called floating or going public. But setting up a public limited company UK is the absolute legal foundation that you need before an Initial Public Offering (IPO).

PLC also provides limited liability to shareholders. It means investors are only financially responsible for business debts up to the amount they invested.

The Legal Requirements for Setting Up a Public Limited Company

Before setting up a public limited company, you have to meet several legal requirements. Otherwise, your application will be rejected instantly.

Here is what you need for setting up a public limited company:

• At least two directors: A PLC needs at least two directors. Both directors should be 16 or over.
• At least one shareholder: You need a minimum of one person or corporate entity to hold shares in the business.
• A qualified company secretary: For setting up a public limited company, you are required by law to appoint a company secretary. A PLC must appoint a suitably qualified company secretary who meets the requirements of the Companies Act 2006, either through recognised professional qualifications or relevant experience.

This includes being a member of the ACCA, ICAEW (ACA), a solicitor, or a barrister. Alternatively, they must have held a public company secretary role. Yes, for at least 3 of the last 5 years immediately preceding their appointment.

• The £50,000 share capital rule: Setting up a public limited company needs issued share capital of at least £50,000. And 25% of the nominal value (£12,500) should be paid up before you can trade or borrow. Remember that £12,500 should not just appear on paper, but has to exist.

Setting Up a Public Limited Company UK: Step by Step

Now let’s look at the practical process of setting up a public limited company:

Step 1: Getting Your Core Details Ready

Once you know you fulfil the legal requirements for setting up a public company, you need to gather your company details.

The first important thing is the company name. Your company name must be completely unique. Also make sure it isn’t similar to any existing business on the register. Crucially, your company name must end with the suffix “PLC” or “Public Limited Company”.

Next, you will need a registered office address. This must be a physical address in the UK where legal mail can be dropped off. If you want to keep your home address off the public register, you can also use a professional registered office service. This is a common step when setting up a public limited company in the UK.

You will also need to choose your Standard Industrial Classification (SIC) codes. These are simple digital codes. These codes basically tell the government in exactly what industry your company operates.

Step 2: Drafting the Constitutional Documents

Next, you will need constitutional documents. Every UK PLC needs two foundational documents to exist. You just cannot skip them when setting up a public limited company:

1. The Memorandum of Association: This document confirms the shareholders’ agreement to form the company and take at least one share each. This document must also be signed by all initial shareholders.
2. The Articles of Association: This is the big rulebook. It dictates exactly how directors make decisions, how shares are transferred, and how shareholder meetings are run. It also tells how dividends are paid out.

Most startups use “model articles”. These are provided by the government.

But for a PLC, you should avoid using generic rules. This is because you are dealing with public money and multiple stakeholders. Therefore, having custom articles is usually the smartest path. These can be drafted by corporate professionals.

Step 3: Submitting the Application and Paying the Fees

Now you are ready to file form IN01 with Companies House. This is where setting up a public limited company becomes official. For the 2026/27 tax year, the registration fees depend heavily on how you choose to submit the paperwork.

During this application, you must also declare your Persons with Significant Control (PSCs). Anyone who holds more than 25% of the shares or voting rights falls into this category. That person must also be explicitly named on the public register.

Step 4: Securing Your Trading Certificate (Form SH50)

When setting up a public limited company UK rules dictate that incorporation only proves the company exists. Yes, it does not give you the right to trade or borrow money. To do that, you will need to apply for a Trading Certificate by filing Form SH50.

This is an important phase of setting up a public limited company successfully.

Form SH50 is a formal declaration. It confirms to Companies House that you have officially allocated the minimum £50,000 share capital. It also confirms that the required 25% (£12,500) has been fully paid into the corporate accounts.

If you start trading before this specific certificate is issued to you, you can face severe fines. Your directors can be prosecuted too.

Step 5: Handling the 2026/27 Tax Registrations

Once you get the Trading Certificate, you need to get your corporate tax ecosystem sorted out fast. Setting up a public limited company requires total tax compliance from day one.

• Corporation Tax

You must register for Corporation Tax with HMRC. You have to do that within three months of starting any business activity. This includes buying stock, renting an office, or hiring staff.

• The VAT Threshold Warning

For the 2026/27 tax year, the compulsory VAT registration threshold is locked at £90,000. You must register for VAT if your rolling 12-month taxable turnover crosses this line. Or if you expect it to cross it in the next 30 days alone. You need to keep an eye on this every single month. Remember, it is a rolling test, not a year-end calculation.

Ongoing Compliance for a Public Limited Company

There are also several ongoing obligations for a public limited company. Hence, setting up a public limited company is only the beginning.

• Annual Accounts: For PLCs, you need to file audited accounts within 6 months of their financial year-end. Their accounts must be audited by a registered auditor.
• Confirmation Statement: A confirmation statement must be filed each year with Companies House. It basically confirms that all company information is accurate and up to date. The deadline to file a confirmation statement is within 14 days of the end of your company’s annual review period.
• Annual General Meetings (AGMs): Public limited companies are required to hold an AGM each year. It must be held within 6 months of the financial year end. Shareholders can vote on key decisions. These decisions include director appointments, dividends, and auditor approval.
• Disclosure Requirements: PLCs are subject to much stricter disclosure rules than private companies. Directors’ remuneration, large shareholdings, related party transactions and material events may all need to be disclosed publicly. If the PLC is listed on the London Stock Exchange, AIM, or another recognised exchange, there are additional obligations under the UK Listing Rules, the Market Abuse Regulation, and the Disclosure Guidance and Transparency Rules.

Identity Verification: The 2026 Rule You Can’t Skip

Since 18 November 2025, every new director and person with significant control must verify their identity with Companies House. They must do it before they can be officially appointed or registered, while new PSCs must verify within 14 days of being registered.

Existing directors of older companies have until 18 November 2026, linked to their confirmation statement date.

Is Setting Up a Public Limited Company Right for You?

A public limited company is not the right fit for every business. It is usually better for larger businesses or companies planning to raise money from the public. It is also suitable for firms that want a stronger market presence.

But for smaller owner-managed businesses, a private limited company is often easier. It is also cheaper to run.

That said, if you are growing fast and also want to build a company that looks ready for investors, setting up a public limited company may make sense.

Public Limited Company vs Private Limited Company

Is setting up a public limited company the right move for you? Let us look at a quick comparison table:

As just discussed, a private limited company is usually the right choice for most small businesses. But if you are scaling fast or raising capital from external investors, then setting up a public limited company starts to make real sense.

Can an Existing Ltd Company Become a PLC?

Yes. In fact, many successful businesses begin life as private limited companies and when they grow, they convert into a PLC. This process is known as re-registration. Remember that the company must satisfy all PLC requirements before conversion is approved. For many businesses, this approach makes more sense than setting up a public limited company from day one.

Can a PLC Be a Dormant Company?

Yes, it can be. Dormant company means the company is registered but not yet trading. This is usually done to reserve a company name. It is also done to prepare for a future fundraising round. You need to know that a dormant PLC still needs to file annual accounts and a confirmation statement. It also cannot use the company name commercially. Yes, until it has its Trading Certificate. So the process of setting up a public limited company still applies even if you remain inactive for a while.

The Bottom Line

Setting up a public limited company opens doors that are simply not available to many private businesses. But remember that there are structural requirements and strict filing timelines.

You need to meet the minimum share capital requirement, appoint at least two directors and a qualified company secretary, and register with Companies House using form IN01.

Most importantly, you need to obtain your Trading Certificate before you can operate. And once you are up and running, the ongoing obligations are significant.

But for the right business, at the right stage, a PLC is definitely a powerful structure.

We offer clear, fixed-fee accounting packages designed to suit businesses of every size. No hidden costs, no nasty surprises just straightforward pricing you can count on.

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How Accotax Can Help 

Setting up a public limited company does not have to be an overwhelming stress. At Accotax, our team of dedicated corporate accountants handles the entire registration for you.

We will manage your Companies House submissions, structure your statement of capital correctly, and take care of your ongoing 2026/27 corporation tax filings.

Disclaimer: The information about “Setting Up a Public Limited Company: Step-by-Step Guide for 2026” is provided in this article including text and graphics. It does not intend to disregard any of the professional advice.