If you're thinking about starting a business in the UK, there's a good chance you'll end up incorporating a private company limited by shares. It's the structure behind the vast majority of UK companies registered today, from one-person consultancies to fast-growing tech startups.
This guide walks you through everything you need to know: what this structure actually is, how to form one, what it costs, and what you'll need to do once it's up and running. Whether you're weighing up your options or ready to file, this is the practical breakdown you need for 2026.
Key Takeaways
A private limited company by shares is a separate legal entity incorporated under the Companies Act 2006. Ownership is divided into shares held by shareholders, and the company is responsible for its own debts.
Over 5.4 million companies are on the Companies House register as of early 2025, with private limited companies representing 92.6% of all UK businesses.
Shareholders' liability is limited to any unpaid amount on their shares, meaning limited liability protects personal assets from company debts.
Forming a company limited by shares requires submitting documents to Companies House, registering for corporation tax with HMRC, and maintaining ongoing filings such as annual accounts and the confirmation statement.
Companies limited by shares are typically used for profit-making ventures, while a company limited by guarantee is more common for charities and membership organisations.
What is a private company limited by shares?
A private company limited by shares is a business structure incorporated under the Companies Act 2006. It exists as a distinct legal entity, separate from the people who own or run it. Ownership in a private company is divided into shares, and the people holding those shares are known as members or shareholders.
This is the default UK business structure for profit-making ventures. Unlike a public limited company, a private company limited by shares cannot offer shares to the general public or list them on a stock exchange. Instead, shares are typically held by founders, family members, or a small group of investors, with transfers often restricted by the company's articles of association.
As a separate legal entity, the company has its own legal capacity. It can own property, enter contracts, employ staff, sue and be sued in its own right. Limited companies are distinct legal entities responsible for their own debts, which means if the business runs into trouble, it's the company that owes creditors rather than the individuals behind it.
To put the popularity of this structure in perspective: by mid-2026, over 5.4 million companies sit on the Companies House register. Well over 90% of those are private companies limited by shares. Private limited companies are popular among UK businesses because of limited liability and corporate image, making them the go-to choice for most companies looking to trade, grow, or attract investment.
How does this compare to other structures? A public company (PLC) can sell shares to the general public and must meet higher capital and reporting thresholds. A company limited by guarantee has no share capital at all and primarily exists for non-profit purposes. We'll compare these in more detail further on.
Key features of a company limited by shares
Here's a practical overview of the main legal and commercial characteristics that define private companies limited by shares in the UK.
Limited liability protection. Shareholders' liability is limited to the unpaid nominal value of their shares. If the company fails and becomes insolvent, shareholders are not required to cover company debts from their personal assets. A limited company offers asset protection to its shareholders, which is one of the main advantages of this structure over operating as sole traders or in a general partnership with unlimited liability.
Share capital. There is no statutory minimum issued share capital for a private company limited by shares. Many new companies start with just £1 of total share capital, often a single share with a nominal value of £1. Share classes and the rights attached to them (voting, dividend entitlement, rights on winding up) are set out in the company's articles of association. A limited company can raise capital by selling shares to new or existing investors.
Restrictions on share transfers. Shares in a private company cannot be offered to the general public. Transfers are usually restricted by the articles of association or a shareholders' agreement, for example by requiring board approval or giving existing shareholders a right of first refusal before selling shares to outsiders.
Company name requirements. The company name must generally end with "Limited" or "Ltd" (or the Welsh equivalents "Cyfyngedig" or "Cyf"). A private company limited by shares must include "limited" in its name. Rare exemptions exist under section 60 of the Companies Act 2006 for certain philanthropic or educational bodies, but these are unusual.
Governance structure. The company is managed by its directors and owned by its shareholders. Private companies must have at least one director who is a natural person. A company secretary may be appointed to handle filings, board support, and compliance, though this is no longer a legal requirement for private companies.
Separate legal personality. The company has its own liabilities, its own assets, and continues to exist regardless of changes in who owns or manages it. This perpetual succession means the whole company can change hands through share transfers without disrupting contracts, employment, or business assets.
Owners, directors, and company secretary
Companies limited by shares draw a clear line between ownership (shareholders) and management (directors). In practice, especially in small companies, the same natural persons often fill both roles, but the legal distinction matters.
Shareholders
Shareholders are the company owners. They can be individuals or corporate entities, and there is no requirement to be a UK resident or national. A private company must have at least one shareholder, though there is no maximum number. A sole founder can be the only shareholder, owning 100% of the issued shares.
First shareholders become members by subscribing to the memorandum of association at incorporation. Their details and shareholdings are recorded in the company's statutory registers and appear on the public Companies House record. Public records include details of members and directors.
Directors
Every private company must have at least one director who is a natural person. Company directors are responsible for the day-to-day management and strategic direction of the business.
Their core duties are set out in sections 171–177 of the Companies Act 2006:
Act within their powers as defined by the company's articles
Promote the success of the company for the benefit of its members
Exercise independent judgment
Exercise reasonable care, skill, and diligence
Avoid conflicts of interest
Not accept benefits from third parties
Declare any interest in proposed transactions
Directors are typically appointed by shareholders under procedures in the articles of association. Shareholders can also remove directors by passing an ordinary resolution at general meetings, subject to any special provisions in the articles.
Directors are not personally liable for company debts in insolvency under normal circumstances. However, if they give personal guarantees, engage in wrongful or fraudulent trading, or breach statutory duties, they can become personally responsible.
Company secretary
A private company limited by shares is not required to appoint a company secretary. Many companies choose to do so anyway, particularly as the business grows, because a secretary can handle compliance filings, maintain statutory registers, prepare board minutes, and support governance. For a public company, the appointment remains a legal requirement.
Forming a private company limited by shares at Companies House
Company formation in 2026 is straightforward. Incorporation requires submitting documents to Companies House, either online or by post. Standard electronic applications are typically processed within 24 hours, making it one of the fastest company registration processes in the world.
Before completing the application form, the promoter needs to make several decisions:
Company name. Choose a name that is unique on the register, doesn't conflict with sensitive or prohibited words, and includes "Limited" or "Ltd."
Registered office address. A registered office must be maintained for all companies. This must be a physical address in the relevant UK jurisdiction (England and Wales, Scotland, or Northern Ireland).
Directors and shareholders. Decide who the first directors and initial shareholders will be. Gather their personal details.
Share structure. Decide on the number of shares, their nominal value, and any share classes.
Articles of association. Choose whether to adopt the Model Articles or draft bespoke articles.
The following documents must be filed:
Memorandum of association, signed by initial subscribers confirming they agree to form the company and take at least one share each. The Memorandum of Association states the company's name and objectives.
Articles of association, either the Model Articles for private companies limited by shares or a tailored set.
Application form (Form IN01 for paper, or equivalent data online), containing details of directors, shareholders, persons with significant control (PSCs), the registered office, and the statement of capital.
An incorporation fee is payable. The fee for online incorporation is £100 as of February 2026. Same-day and postal services attract different fees, so check the current schedule if speed or method matters to you.
Upon successful incorporation, Companies House issues a certificate of incorporation and enters the new company on the public register. At that point, the company becomes a distinct legal person with its own legal capacity.
Shortly after incorporation, the company must register for corporation tax with HMRC. This must happen within three months of starting business activity. Most companies will also open a business bank account at this stage.
Companies must comply with the Companies Act 2006 requirements from the moment of incorporation onwards.
Information needed for the application form
Accurate, complete information is essential when submitting the application to register a company limited by shares. Here's what founders need to prepare in advance:
Company name. Must be unique, not contain offensive words, and include "Limited" or "Ltd" unless exempt. Certain sensitive words and expressions (such as "bank," "insurance," or "royal") require prior approval from relevant authorities.
Registered office address. Must be a physical address in England and Wales, Scotland, or Northern Ireland, matching the jurisdiction of registration. This address is shown on the public record and is used by HMRC and Companies House for official correspondence.
Statement of capital. This sets out the total number of shares, aggregate nominal value, currency, and rights attaching to each share class. It also records the amount each initial shareholder agrees to pay. The capital originally invested is captured here, establishing the baseline of shareholders liability.
Director details. For each director: full name, nationality, date of birth (partial details shown on public record), service address, occupation, and usual residential address. The residential address is kept confidential; the service address is publicly visible. Financial statements and director details of a limited company are publicly available through Companies House.
Shareholder details. Names, addresses, and how many shares each subscriber will hold. Shareholders can be individuals or corporate entities, and owning shares in a UK company does not require UK residency.
PSC (persons with significant control) information. Anyone holding more than 25% of shares or voting rights, or who exercises significant control via other means, must be identified. PSC details must be provided at incorporation.
Compliance statement. A declaration confirming that the subscribers wish to form a company under the Companies Act 2006 and that the company's proposed activities are lawful.
Memorandum and articles of association
Every UK company limited by shares must have both a memorandum of association and articles of association on formation. Together, these form the company's constitutional documents.
Memorandum of association
The memorandum is a short document signed by the initial subscribers. It records their agreement to form the company and to become members by taking at least one share each. For companies formed after 1 October 2009 under the Companies Act 2006, the memorandum is largely a historical record. It cannot be amended after incorporation. The Memorandum of Association states the company's name and objectives at the point of formation.
Articles of association
The articles of association are the internal rulebook. They govern:
How directors are appointed and removed, and how they appoint directors in future
How shareholder decisions are made (ordinary and special resolutions, general meetings, written resolutions)
How shares can be issued, transferred, or repurchased
Dividend rights and distribution policies
Pre-emption rights and restrictions on share transfers
Procedures for winding up or restructuring
Many small companies adopt the Model Articles for private companies limited by shares, which are prescribed under the Companies Act 2006 and cover standard governance arrangements. Bespoke articles are common where there are multiple investors, different share classes (such as preference shares or non-voting shares), or specific exit strategies.
It's worth noting that articles cannot override mandatory statutory provisions. For example, the statutory rules on written resolutions under sections 288–300 of the Companies Act 2006 will apply regardless of what the articles say.
If you're bringing in outside investment or setting up with multiple founders, it's worth getting professional advice on your articles. The Model Articles are a solid starting point, but they won't cover every scenario.
Ongoing legal obligations: Companies House and HMRC
Once a company limited by shares is incorporated, the work doesn't stop. Directors must keep the company in good legal standing by filing certain documents every year and keeping statutory records up to date. Companies House requires strict ongoing compliance and reporting obligations.
Confirmation statement. Companies must file a confirmation statement annually with Companies House. This filing confirms that key information (directors, shareholders, PSCs, registered office, share capital) is correct, or updates it where necessary. It replaced the old annual return. Companies must file an annual confirmation statement within 14 days of the review period ending. The fee for online confirmation statement submission is £50. Failure to file can lead to penalties and potential strike-off.
Annual accounts. Most small companies file micro-entity or small company accounts to Companies House and full accounts to HMRC. Filing deadlines usually fall nine months after the end of the financial year. Financial statements and director details of a limited company are publicly available once filed.
Corporation tax. Companies must file a tax return with HMRC annually. The company pays corporation tax on its profits. Companies pay Corporation Tax at rates of 19%–25% on profits, depending on the level of taxable profit. Profits up to £50,000 are taxed at 19% (the small profits rate); profits above £250,000 at 25% (the main rate); and profits between those thresholds attract marginal relief. Profits of a private limited company are distributed as dividends from what remains after tax.
Record keeping. The company must maintain registers of members, directors, PSCs, and charges. Minutes of board and shareholder meetings must be kept, and accounting records preserved for at least six years.
Consequences of non-compliance. Late filing of accounts or confirmation statements results in automatic penalties. Persistent failures can lead to the company being struck off the register or directors facing prosecution. Incorrect filings may expose directors to personal liability, especially in insolvency scenarios.
Uses, advantages, and disadvantages of companies limited by shares
A company limited by shares is appropriate for a wide range of situations, but it's not the right fit for everyone. Here's when it works, and the trade-offs to consider.
Typical uses
Companies limited by shares primarily exist for profit-making ventures. They're the natural choice for businesses expecting to grow, attract investment, employ staff, or trade actively. They're less common for charities, clubs, or community groups, which typically use a company limited by guarantee or a charitable incorporated organisation.
Advantages
Limited liability protection shields shareholders' personal assets from business debts. If the company fails, shareholders only stand to lose the capital originally invested (or any unpaid amount on their shares), not their home, savings, or other assets.
The company is a separate legal entity with perpetual succession. It continues to exist even if shareholders change, making it easier to bring in new investors or transfer the whole company.
Ownership is transferable through selling shares, which simplifies exit planning and succession.
Tax efficiencies: the company pays corporation tax on profits, and shareholders can receive income as dividends, which may be taxed at lower rates than salary. Incorporated businesses can also access reliefs like R&D tax credits.
Limited companies typically have enhanced reputation and credibility with suppliers, lenders, and customers compared to sole traders or informal partnerships.
Disadvantages
A limited company has a higher administrative burden compared to a sole trader. You'll need to file annual accounts, a confirmation statement, corporation tax returns, and maintain statutory registers.
Some personal and financial information is publicly disclosed, including director details, PSC information, and filed accounts.
Profits can only be distributed as dividends from distributable reserves. Directors' loans must be managed carefully to avoid tax charges.
In certain situations, limited liability protection may not fully apply. Directors who give personal guarantees to lenders or landlords take on personal exposure. Wrongful or fraudulent trading in insolvency can also lead to personal liability.
How does it compare?
Sole traders and partnerships (including a sole proprietorship) are simpler to set up and run, but the owners face unlimited liability for business debts. A limited liability partnership (LLP) offers liability protection but is taxed differently and can't raise equity capital in the same way. An unlimited company provides no liability cap at all. For most profit-driven businesses, a private limited company by shares remains the strongest all-round option.
Companies limited by shares vs companies limited by guarantee
Both structures are "limited companies" under the Companies Act 2006, but they serve different purposes.
A company limited by shares has shareholders and share capital. It's built for commercial, profit-making activity. Shareholders own the company in proportion to their shares, and profits can be distributed as dividends. Whilst shares represent ownership, they also carry voting rights and other entitlements set out in the articles.
A company limited by guarantee has members (guarantors) rather than shareholders, and no share capital. Members guarantee a nominal sum, often just £1, which they agree to pay if the company is wound up. This structure is commonly used by charities, clubs, professional bodies, and membership organisations where profits are retained or reinvested rather than distributed.
Here are the key differences at a glance:
Ownership. Share company: ownership through shares. Guarantee company: membership without shares.
Profit distribution. Share company: dividends to shareholders. Guarantee company: profits typically retained for the organisation's purposes.
Liability. Shareholders' liability is limited to unpaid amounts on their shares. Guarantors' liability is limited to their guarantee amount (usually £1).
Typical use. Share company: trading, investment, commercial ventures. Guarantee company: non-profits, charities, community interest groups.
The incorporation process at Companies House is similar for both, but the application form for a company limited by guarantee uses a statement of guarantee instead of a statement of capital.
Changing, converting, and winding up a private company limited by shares
Companies limited by shares can evolve over time. They may re-register as another type of company, amend their articles, or be wound up when no longer needed.
Re-registration as a public limited company (PLC). A private company limited by shares can re-register as a public company under the Companies Act 2006. This requires meeting minimum share capital thresholds, revising the articles, obtaining shareholder approval via special resolution, and submitting the appropriate application to Companies House. This route is typically pursued when a company plans to list on a stock exchange or raise capital from the general public.
Conversion to a company limited by guarantee. There is no simple statutory route to convert a company limited by shares directly into a company limited by guarantee. In practice, this is usually achieved by setting up a new guarantee company, transferring the existing company's business assets and operations, and then winding up or striking off the original company.
Voluntary strike-off. If a company is no longer needed, directors can apply to have it struck off the register. The company must not have traded or disposed of assets in the previous three months, must have no ongoing legal proceedings, and must notify all stakeholders. This is a straightforward route for dormant or redundant companies.
Members' voluntary liquidation. Where the company is solvent, directors can make a statutory declaration of solvency and the company can be formally wound up with assets distributed to members. This is a going concern wind-down handled by a licensed insolvency practitioner.
Creditors' voluntary liquidation. If the company is insolvent, directors initiate a winding-up with a meeting of creditors, and an insolvency practitioner manages the process, paying creditors in the statutory order.
If the company is insolvent or approaching insolvency, directors must seek professional advice immediately. Continuing to trade when there is no reasonable prospect of avoiding insolvency can expose directors to personal liability for wrongful trading.
FAQ
Here are answers to some of the most common questions about private companies limited by shares that aren't fully covered elsewhere in this guide.
Do I need to live in the UK to set up a private company limited by shares?
No. There is no requirement for shareholders or directors to be UK residents or UK nationals. However, the company must have a registered office address in the relevant UK jurisdiction (England and Wales, Scotland, or Northern Ireland) and must comply with UK law, including identity verification for anti-money-laundering purposes. Non-UK residents should also consider tax and regulatory obligations in their home country and seek local advice.
Can I be the only director and shareholder of my company?
Yes. UK law allows a private company limited by shares to have a single director who is also the only shareholder, holding 100% of the company's shares. This is common for freelancers, consultants, and small businesses incorporating for the first time. Even in a one-person company, the legal separation between the company and the individual still applies, and all filing and record-keeping obligations remain in force.
How much share capital do I need to start a company limited by shares?
There is no minimum share capital for a UK company. Many companies start with £1 of issued share capital, divided into one or more shares with a nominal value of £1 each. While a low nominal share value limits initial financial exposure, founders should think ahead. If you plan to bring in investors or create different share classes, getting the structure right from the start, in your articles of association and potentially a shareholders' agreement, will save time and cost later.
Do companies limited by shares need to file a confirmation statement every year?
Yes. Every company limited by shares must file a confirmation statement at least once every 12 months, even if nothing has changed. This filing verifies that information held at Companies House, such as shareholders, PSCs, and the registered office, is up to date. The fee for online submission is £50. Failure to file on time can result in penalties and, in serious cases, the company being struck off the register.
Are directors personally liable for Corporation Tax and other company debts?
Corporation tax is owed by the company itself as a separate legal person, not by directors personally. Directors can become personally responsible only in specific circumstances: giving personal guarantees on loans or leases, wrongful or fraudulent trading during insolvency, or breaching statutory duties. If you're concerned about personal exposure in a financially distressed situation, seek professional advice promptly.
